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springer 3 May 2014 07:20 AM
Case back, serial number project
 
Below is a listing by numerical order of Rolex serial numbers and their corresponding case back numbers. 1972 was the last year for case back stampings. :thumbsup:


112XXX, case back dated IV 55
223XXX, case back dated I 57
349XXX, case back dated I 1958
381XXX, case back dated II 1958
489XXX, case back dated III 59
490XXX, case back dated III 59
547XXX, case back dated II 60
577XXX, case back dated II 60
596XXX, case back dated IV 60
745XXX, case back dated II 62
997XXX, case back dated III 63
112XXXX, case back dated IV 64
11XXXXX, case back dated IV 64
127XXXX, case back dated IV 64
13XXXXX, case back dated IV 65
133XXXX, case back dated I 66
134XXXX, case back dated III 66
137XXXX, case back dated I 66
140XXXX, case back dated II 66
160XXXX, case back dated II 67
163XXXX, case back dated II 67
164XXXX, case back dated II 67
171XXXX, case back dated IV 67
182XXXX, case back dated II 67
182XXXX, case back dated IV 67
183XXXX, case back dated I 68
1852XXX, case back dated I 68
188XXXX, case back dated I 68
18XXXXX, case back dated III 68
19XXXXX, case back dated IV 68
204XXXX, case back dated IV 68
213XXXX, case back dated IV 68
218XXXX, case back dated I 69
231XXXX, case back dated III 69
23XXXXX, case back dated IV 70
24XXXXX, case back dated II 70
241XXXX, case back dated III 69 (red Sub)
247XXXX, case back dated II 70
25XXXXX, case back dated I 70
26XXXXX, case back dated III 70
267XXXX, case back dated I 70
271XXXX, case back dated I 70
281XXXX, case back dated II 71
28XXXXX, case back dated IV 70
29XXXXX, case back dated I 71
304XXXX, case back dated II 72
307XXXX, case back dated III 71
309XXXX, case back dated I 72
31XXXXX, case back dated II 71
32XXXXX, case back dated II 72
33XXXXX, case back dated II 72
33XXXXX, case back dated IV 72
35XXXXX, case back dated I 72
36XXXXX, no case back date
374XXXX, no case back date
386XXXX, case back dated I 72

springer 12 October 2014 01:06 AM
Here is an updated list.

CASE BACK NUMBERS
(UPDATED 10/11/14)

112XXX, case back dated IV 55
223XXX, case back dated I 57
349XXX, case back dated I 1958
381XXX, case back dated II 1958
489XXX, case back dated III 59
490XXX, case back dated III 59
503XXX, case back dated I 60 (GMT)
547XXX, case back dated II 60
577XXX, case back dated II 60
596XXX, case back dated IV 60
745XXX, case back dated II 62
87XXXX, case back dated I 63
990XXX, case back dated III 63
997XXX, case back dated III 63
10XXXXX, case back dated IV 63
104XXXX, case back dated IV 63
112XXXX, case back dated IV 64
11XXXXX, case back dated IV 64
127XXXX, case back dated IV 64
13XXXXX, case back dated IV 65
133XXXX, case back dated I 66
134XXXX, case back dated III 66
137XXXX, case back dated I 66
140XXXX, case back dated II 66 (gilt GMT)
14XXXXX, case back dated II 66
142XXXX, case back dated IV 65 (sold 9/67)
15XXXXX, case back dated VI 66 (model 1016, 6th qtr)
16XXXXX, case back dated II 67
160XXXX, case back dated II 67
163XXXX, case back dated II 67 (one owner GMT full set)
164XXXX, case back dated II 67
168XXXX, case back dated II 67
17XXXXX, case back dated IV 67
171XXXX, case back dated IV 67
180XXXX, case back dated I 68
182XXXX, case back dated II 67
182XXXX, case back dated IV 67
183XXXX, case back dated I 68
185XXXX, case back dated IV 67
1852XXX, case back dated I 68
188XXXX, case back dated I 68
18XXXXX, case back dated I 68
18XXXXX, case back dated III 68
19XXXXX, case back dated IV 68
19XXXXX, case back dated IV 68
204XXXX, case back dated IV 68 (sold 3/70)
213XXXX, case back dated IV 68
21XXXXX, case back dated II 69
218XXXX, case back dated I 69
231XXXX, case back dated III 69
23XXXXX, case back dated IV 70
24XXXXX, case back dated IV 69
24XXXXX, case back dated II 70
241XXXX, case back dated III 69 (red Sub)
241XXXX, case back dated I 70 (red Sub sold 7/71)
24XXXXX, case back dated I 70
244XXXX, case back dated II 70
247XXXX, case back dated II 70
25XXXXX, case back dated I 70
250XXXX, case back dated I 70
26XXXXX, case back dated III 70
267XXXX, case back dated I 70
271XXXX, case back dated I 70
281XXXX, case back dated II 71
28XXXXX, case back dated IV 70 (red Sub sold 6/1974)
28XXXXX, case back dated IV 70
29XXXXX, case back dated I 71
292XXXX, case back dated II 71
304XXXX, case back dated II 72
307XXXX, case back dated III 71
309XXXX, case back dated I 72
31XXXXX, case back dated II 71
32XXXXX, case back dated II 72
33XXXXX, case back dated II 72
33XXXXX, case back dated III 72
33XXXXX, case back dated IV 72
35XXXXX, case back dated I 72
36XXXXX, no case back date
374XXXX, no case back date
380XXXX, no case back date
386XXXX, case back dated I 72

springer 23 July 2015 12:01 AM
Updated list.

CASE BACK NUMBERS
(UPDATED 7/1/15)

112XXX, case back dated IV 55
223XXX, case back dated I 57
306XXX, case back dated III 57 (Sub 6536)
307XXX, case back dated III 57 (6538)
349XXX, case back dated I 1958
355XXX, case back dated II 1958 (GMT 6542)
360XXX, case back dated II 1958 (Sub 5508)
381XXX, case back dated II 1958
397XXX, case back dated III 1958 (GMT 6542)
398XXX, case back dated II 1958 (GMT 6542)
398XXX, case back dated III 1958(GMT)6542)
427XXX, case back dated IV 1958 (GMT 6542)
488XXX, case back dated III 1958(Sub 5508)
489XXX, case back dated III 59
490XXX, case back dated III 59
503XXX, case back dated I 60 (GMT)
547XXX, case back dated II 60
577XXX, case back dated II 60
596XXX, case back dated IV 60
745XXX, case back dated II 62
87XXXX, case back dated IV 62 (Sub 5512)
87XXXX, case back dated I 63
876XXX, case back dated I 63 (GMT 1675)
989XXX, case back dated III 63 (Sub 5513)
990XXX, case back dated III 63
997XXX, case back dated III 63
10XXXXX, case back dates III 64
10XXXXX, case back dated III 63 (Sub 5513 w/5512 caseback)
10XXXXX, case back dated IV 63
104XXXX, case back dated IV 63
112XXXX, case back dated IV 64
11XXXXX, case back dated IV 64 (Gilt GMT 1675)
116XXXX, case back dated I 65
127XXXX, case back dated IV 64
13XXXXX, case back dated IV 65
133XXXX, case back dated I 66
134XXXX, case back dated III 66
137XXXX, case back dated I 66
140XXXX, case back dated II 66 (gilt GMT)
14XXXXX, case back dated II 66
142XXXX, case back dated IV 65 (Gilt GMT sold 9/67)
15XXXXX, case back dated III 66 (Sub 5513)
15XXXXX, case back dated VI 66 (model 1016, 6th qtr)
15XXXXX, case back dated VI 66 (model 6466, 6th qtr)
16XXXXX, case back dated II 67 (GMT, Mark I dial)
160XXXX, case back dated II 67
163XXXX, case back dated II 67 (one owner GMT full set)
164XXXX, case back dated II 67
168XXXX, case back dated II 67
17XXXXX, case back dated II 67
17XXXXX, case back dated IV 67
171XXXX, case back dated IV 67
177XXXX, case back dated IV 67 (Sub 5513)
180XXXX, case back dated I 68
18XXXXX, case back dated I 68 (GMT 1675)
182XXXX, case back dated II 67
182XXXX, case back dated IV 67
18XXXXX, case back dated IV 67
18XXXXX, case back dated IV 67
183XXXX, case back dated I 68
185XXXX, case back dated IV 67
1852XXX, case back dated I 68
188XXXX, case back dated I 68
18XXXXX, case back dated I 68
18XXXXX, case back dated III 68
19XXXXX, case back dated III 68
19XXXXX, case back dated III 68 (GMT)
1902XXX, case back dated III 69
194XXXX, case back dated III 68
19XXXXX, case back dated IV 68
19XXXXX, case back dated IV 68
194XXXX, case back dated IV 68
204XXXX, case back dated IV 68 (sold 3/70)
206XXXX, case back dated IV 68
209XXXX, case back dated IV 67
213XXXX, case back dated IV 68
21XXXXX, case back dated II 69
218XXXX, case back dated I 69
22XXXXX, case back dated II 69
231XXXX, case back dated III 69
23XXXXX, case back dated IV 70
24XXXXX, case back dated IV 69
24XXXXX, case back dated IV 69
24XXXXX, case back dated II 70
241XXXX, case back dated III 69 (red Sub)
241XXXX, case back dated I 70 (red Sub sold 7/71)
24XXXXX, case back dated I 70
244XXXX, case back dated II 70
247XXXX, case back dated II 70
25XXXXX, case back dated I 70
250XXXX, case back dated I 70
26XXXXX, case back dated III 70
267XXXX, case back dated I 70
27XXXXX, case back dated I 70 (Sub 1680, sold 8/26/72)
271XXXX, case back dated I 70
2817XXX, case back dated I 70 (GMT 1675)
231XXXX, case back dated I 71
281XXXX, case back dated II 71
28XXXXX, case back dated III 71 (1600 Datejust)
28XXXXX, case back dated IV 70 (red Sub sold 6/1974)
286XXXX, case back dated II 70 (SS/14k GMT 1675)
28XXXXX, case back dated IV 70
29XXXXX, case back dated III 70 (Sub 5513)
29XXXXX, case back dated I 71
292XXXX, case back dated II 71
297XXXX, case back dated II 71
304XXXX, case back dated II 72
307XXXX, case back dated III 71
309XXXX, case back dated I 72
31XXXXX, case back dated II 71
315XXXX, case back dated II 71 (GMT 1675)
323XXXX, case back dated I 72
32XXXXX, case back dated II 72
330XXXX, case back dated IV 72 (Sub 1680)
33XXXXX, case back dated II 72
33XXXXX, case back dated III 72
33XXXXX, case back dated IV 72
35XXXXX, case back dated I 72
36XXXXX, no case back date
374XXXX, no case back date
380XXXX, no case back date
386XXXX, case back dated I 72
6167XXX, --------------- (1980 Sub 1680, VE clasp code)

rumahrolex 7 November 2019 05:35 PM
thanks, really helps

Perpetualwatchlover 16 November 2019 05:31 AM
So much knowledge, is this list based on personal experience or? Thanks anyway!

jlovda 14 December 2019 10:47 AM
Is this a "sticky?"

Pocosso 17 May 2020 03:32 PM
Great Info here.

ccruchaga 5 August 2020 01:08 PM
Great!!! I have a 1675 with a serial number missing, but this help me to finde the year!!! Thx!!!

springer 11 September 2021 12:58 PM
UPDATED WITH ADDITIONAL SERIAL NUMBERS WITH THEIR CORRESPONDING CASE BACK DATES ON 9/10/21:

112XXX, case back dated IV 55
223XXX, case back dated I 57
306XXX, case back dated III 57 (Sub 6536)
307XXX, case back dated III 57 (6538)
349XXX, case back dated I 1958
355XXX, case back dated II 1958 (GMT 6542)
360XXX, case back dated II 1958 (Sub 5508)
381XXX, case back dated II 1958
381XXX, case back dated I 1958 (Sub 5510)
397XXX, case back dated III 1958 (GMT 6542)
398XXX, case back dated II 1958 (GMT 6542)

398XXX, case back dated III 1958(GMT)6542)
399XXX, case back dated I 59 (SUB 6536)
400XXX, case back dated III 1958 (SUB 5508)
427XXX, case back dated IV 1958 (GMT 6542)
488XXX, case back dated III 1958(Sub 5508)
489XXX, case back dated III 59
490XXX, case back dated III 59
503XXX, case back dated I 60 (GMT)
547XXX, case back dated II 60
577XXX, case back dated II 60
596XXX, case back dated IV 60
624XXX, case back dated IV 60 (Gilt GMT)
661XXX, case back dated I 61 (Sub 5512 4-liner)
6959XX, case back dated II 61 (GMT 1675)
745XXX, case back dated II 62
87XXXX, case back dated IV 62 (Sub 5512)
87XXXX, case back dated I 63
876XXX, case back dated I 63 (GMT 1675)
87XXXX, case back dated IV 63 (Gilt GMT)
989XXX, case back dated III 63 (Sub 5513)
990XXX, case back dated III 63
997XXX, case back dated III 63
10XXXXX, case back dates III 64
10XXXXX, case back dated III 63 (Sub 5513 w/5512 case back)
10XXXXX, case back dated IV 63
104XXXX, case back dated IV 63
112XXXX, case back dated IV 64
11XXXXX, case back dated IV 64 (Gilt GMT 1675)
116XXXX, case back dated I 65
120XXXX, case back dated I 65 5513 Submariner
127XXXX, case back dated IV 64
1299XXX, case back dated II 65 (GMT 1675)
13XXXXX, case back dated IV 65
13XXXXX, case back dated II 65 (gilt GMT)
133XXXX, case back dated I 66
134XXXX, case back dated III 66
137XXXX, case back dated I 66
140XXXX, case back dated II 66 (gilt GMT)
14XXXXX, case back dated II 66
142XXXX, case back dated IV 65 (Gilt GMT sold 9/67)
15XXXXX, case back dated III 66 (Sub 5513)
153XXXX, case back dated II 66 (GMT 1675 gilt)
15XXXXX, case back dated VI 66 (model 1016, 6th qtr)
15XXXXX, case back dated VI 66 (model 6466, 6th qtr)
16XXXXX, case back dated II 67 (GMT, Mark I dial)
160XXXX, case back dated II 67
163XXXX, case back dated II 67 (one owner GMT full set)
164XXXX, case back dated II 67
168XXXX, case back dated II 67
170XXXX, case back dated II 67
17XXXXX, case back dated II 67
17XXXXX, case back dated IV 67
171XXXX, case back dated IV 67
177XXXX, case back dated IV 67 (Sub 5513)
179XXXX, case back dated II 67 (GMT 1675)
180XXXX, case back dated I 68
18XXXXX, case back dated I 68 (GMT 1675)
182XXXX, case back dated II 67
182XXXX, case back dated IV 67
18XXXXX, case back dated IV 67
18XXXXX, case back dated IV 67
183XXXX, case back dated I 68
185XXXX, case back dated IV 67
1852XXX, case back dated I 68
188XXXX, case back dated I 68
18XXXXX, case back dated I 68
18XXXXX, case back dated III 68
19XXXXX, case back dated III 68
19XXXXX, case back dated III 68 (GMT)
1902XXX, case back dated III 69
194XXXX, case back dated III 68
19XXXXX, case back dated IV 68
19XXXXX, case back dated IV 68
194XXXX, case back dated IV 68
204XXXX, case back dated IV 68 (sold 3/70)
2043XXX, case back dated III 68 (GMT 1675)
206XXXX, case back dated IV 68
209XXXX, case back dated IV 67
211XXXX, case back dated IV 68 (GMT, sold 8/13/71)
213XXXX, case back dated IV 68
21XXXXX, case back dated II 69
218XXXX, case back dated I 69
21XXXXX, case back dated I 69 (Submariner 1680)
22XXXXX, case back dated II 69
231XXXX, case back dated I 71
231XXXX, case back dated III 69
23348XX, case back dated IV 68 (GMT 1675)
23346XX, case back dated II 71 (GMT 1675)
2355XXX, case back dated III 69 (red Sub 1680)
23XXXXX, case back dated IV 70
24XXXXX, case back dated IV 69
24XXXXX, case back dated IV 69
24XXXXX, case back dated II 70
241XXXX, case back dated III 69 (red Sub)
241XXXX, case back dated I 70 (red Sub sold 7/71)
24XXXXX, case back dated I 70
242XXXX, case back dated II 70 (GMT Mark I dial)
244XXXX, case back dated II 70
247XXXX, case back dated II 70
25XXXXX, case back dated I 70
2556XXX, case back dated II 70
250XXXX, case back dated I 70
26XXXXX, case back dated III 70
267XXXX, case back dated I 70
27XXXXX, case back dated I 70 (Sub 1680, sold 8/26/72)
271XXXX, case back dated I 70
276XXXX, case back dated III 70 (GMT 1675)
2817XXX, case back dated I 70 (GMT 1675)
272XXXX, case back dated II 71 (Datejust 1603)
27XXXXX, case back dated II 71 (GMT)
281XXXX, case back dated II 71
28XXXXX, case back dated III 71 (1600 Datejust)
28XXXXX, case back dated IV 70 (red Sub sold 6/1974)
284XXXX, case back dated II 71 GMT 1675
286XXXX, case back dated II 70 (SS/14k GMT 1675)
28XXXXX, case back dated IV 70
2906XXX, case back dated II 71 GMT Mark II dial
29XXXXX, case back dated III 70 (Sub 5513)
292XXXX, case back dated IV 70 (Sub 1680)
29XXXXX, case back dated I 71
292XXXX, case back dated II 71
2961XXX, case back dated II 71 (GMT 1675/set)
297XXXX, case back dated II 71
29XXXXX, case back dated I 72 (Explorer)
304XXXX, case back dated II 72
307XXXX, case back dated III 71
30XXXXX, case back dated III 71
309XXXX, case back dated I 72
31XXXXX, case back dated II 71
315XXXX, case back dated II 71 (GMT 1675)
323XXXX, case back dated I 72
32XXXXX, case back dated II 72
3245XXX, case back dated II 72 (GMT/1675-SS)
3266XXX, case back dated II 72 (GMT Mark II)
330XXXX, case back dated IV 72 (Sub 1680)
33XXXXX, case back dated II 72
33XXXXX, case back dated III 72
33XXXXX, case back dated IV 72
3382XXX, case back dated II 72 (GMT)
34XXXXX, case back dated II 72 (GMT 1675)
35XXXXX, case back dated I 72
36XXXXX, no case back date
374XXXX, no case back date
380XXXX, no case back date
386XXXX, case back dated I 72
6167XXX, --------------- (1980 Sub 1680, VE clasp code)

timnik 11 September 2021 08:27 PM
Thanks Springer

Great info

springer 30 March 2025 12:37 PM
CASE BACK & SERIAL NUMBERS CHART
(UPDATED 3/29/25)

Serial Number

112XXX, case back dated IV 55
223XXX, case back dated I 57
306XXX, case back dated III 57 (Sub 6536)
307XXX, case back dated III 57 (6538)
349XXX, case back dated I 1958
355XXX, case back dated II 1958 (GMT 6542)
360XXX, case back dated II 1958 (Sub 5508)
381XXX, case back dated II 1958
381XXX, case back dated I 1958 (Sub 5510)
397XXX, case back dated III 1958 (GMT 6542)
398XXX, case back dated II 1958 (GMT 6542)

398XXX, case back dated III 1958(GMT)6542)
399XXX, case back dated I 59 (SUB 6536)
400XXX, case back dated III 1958 (SUB 5508)
427XXX, case back dated IV 1958 (GMT 6542)
488XXX, case back dated III 1958(Sub 5508)
489XXX, case back dated III 59
490XXX, case back dated III 59
503XXX, case back dated I 60 (GMT)
547XXX, case back dated II 60
577XXX, case back dated II 60
596XXX, case back dated IV 60
624XXX, case back dated IV 60 (Gilt GMT)
661XXX, case back dated I 61 (Sub 5512 4-liner)
6959XX, case back dated II 61 (GMT 1675)
745XXX, case back dated II 62
87XXXX, case back dated IV 62 (Sub 5512)
87XXXX, case back dated I 63
876XXX, case back dated I 63 (GMT 1675)
87XXXX, case back dated IV 63 (Gilt GMT)
989XXX, case back dated III 63 (Sub 5513)
990XXX, case back dated III 63
997XXX, case back dated III 63
10XXXXX, case back dates III 64
10XXXXX, case back dated III 63 (Sub 5513 w/5512 case back)
10XXXXX, case back dated IV 63
104XXXX, case back dated IV 63
112XXXX, case back dated IV 64
11XXXXX, case back dated IV 64 (Gilt GMT 1675)
116XXXX, case back dated I 65
120XXXX, case back dated I 65 5513 Submariner
127XXXX, case back dated IV 64
129XXXX, case back dated III 65 (Sub 5513)
1299XXX, case back dated II 65 (GMT 1675)
13XXXXX, case back dated IV 65
13XXXXX, case back dated II 65 (gilt GMT)
133XXXX, case back dated I 66
134XXXX, case back dated III 66
137XXXX, case back dated I 66
140XXXX, case back dated II 66 (gilt GMT)
14XXXXX, case back dated II 66
142XXXX, case back dated IV 65 (Gilt GMT sold 9/67)
14617XX, case back dated II 66 )Gilt GMT 1675)
15XXXXX, case back dated III 66 (Sub 5513)
153XXXX, case back dated II 66 (GMT 1675 gilt)
15XXXXX, case back dated VI 66 (model 1016, 6th qtr)
15XXXXX, case back dated VI 66 (model 6466, 6th qtr)
16XXXXX, case back dated II 67 (GMT, Mark I dial)
160XXXX, case back dated II 67
163XXXX, case back dated II 67 (one owner GMT full set)
164XXXX, case back dated II 67
168XXXX, case back dated II 67
170XXXX, case back dated II 67
17XXXXX, case back dated II 67
17XXXXX, case back dated IV 67
171XXXX, case back dated IV 67
177XXXX, case back dated IV 67 (Sub 5513)
179XXXX, case back dated II 67 (GMT 1675)
180XXXX, case back dated I 68
18XXXXX, case back dated I 68 (GMT 1675)
182XXXX, case back dated II 67
182XXXX, case back dated IV 67
18XXXXX, case back dated IV 67
18XXXXX, case back dated IV 67
183XXXX, case back dated I 68
185XXXX, case back dated IV 67
1852XXX, case back dated I 68
188XXXX, case back dated I 68
18XXXXX, case back dated I 68
18XXXXX, case back dated III 68
19XXXXX, case back dated III 68
19XXXXX, case back dated III 68 (GMT)
1902XXX, case back dated III 69
194XXXX, case back dated III 68
19XXXXX, case back dated IV 68
19XXXXX, case back dated IV 68
194XXXX, case back dated IV 68
204XXXX, case back dated IV 68 (sold 3/70)
2043XXX, case back dated III 68 (GMT 1675)
206XXXX, case back dated IV 68
209XXXX, case back dated IV 67
211XXXX, case back dated IV 68 (GMT, sold 8/13/71)
213XXXX, case back dated IV 68
21XXXXX, case back dated II 69
218XXXX, case back dated I 69
21XXXXX, case back dated I 69 (Submariner 1680)
22XXXXX, case back dated II 69
231XXXX, case back dated I 71
231XXXX, case back dated III 69
23348XX, case back dated IV 68 (GMT 1675)
23346XX, case back dated II 70 (GMT 1675)
2355XXX, case back dated III 69 (red Sub 1680)
23XXXXX, case back dated IV 70
24XXXXX, case back dated IV 69
24XXXXX, case back dated IV 69
24XXXXX, case back dated II 70
241XXXX, case back dated III 69 (red Sub)
241XXXX, case back dated I 70 (red Sub sold 7/71)
24XXXXX, case back dated I 70
242XXXX, case back dated II 70 (GMT Mark I dial)
244XXXX, case back dated II 70
247XXXX, case back dated II 70
25XXXXX, case back dated I 70
2556XXX, case back dated II 70
250XXXX, case back dated I 70
26XXXXX, case back dated III 70
267XXXX, case back dated I 70
27XXXXX, case back dated I 70 (Sub 1680, sold 8/26/72)
271XXXX, case back dated I 70
276XXXX, case back dated III 70 (GMT 1675)
2817XXX, case back dated I 70 (GMT 1675)
272XXXX, case back dated II 71 (Datejust 1603)
27XXXXX, case back dated II 71 (GMT, Mark II dial)
281XXXX, case back dated II 71
28XXXXX, case back dated III 71 (1600 Datejust)
28XXXXX, case back dated IV 70 (red Sub sold 6/1974)
284XXXX, case back dated II 71 GMT 1675
286XXXX, case back dated II 70 (SS/14k GMT 1675)
28XXXXX, case back dated IV 70
2906XXX, case back dated II 71 GMT Mark II dial
29XXXXX, case back dated III 70 (Sub 5513)
292XXXX, case back dated IV 70 (Sub 1680)
29XXXXX, case back dated I 71
292XXXX, case back dated II 71
2961XXX, case back dated II 71 (GMT 1675/set)
297XXXX, case back dated II 71
29XXXXX, case back dated I 72 (Explorer)
304XXXX, case back dated II 72
307XXXX, case back dated III 71
30XXXXX, case back dated III 71
309XXXX, case back dated I 72
31XXXXX, case back dated II 71
315XXXX, case back dated II 71 (GMT 1675)
323XXXX, case back dated I 72
32XXXXX, case back dated II 72
3245XXX, case back dated II 72 (GMT/1675-SS)
3266XXX, case back dated II 72 (GMT Mark II)
330XXXX, case back dated IV 72 (Sub 1680)
33XXXXX, case back dated II 72
33XXXXX, case back dated III 72
33XXXXX, case back dated IV 72
3382XXX, case back dated II 72 (GMT)
34XXXXX, case back dated II 72 (GMT 1675)
3425XXX, case back dated III 72 (GMT 1675, set)
35XXXXX, case back dated I 72
36XXXXX, no case back date
374XXXX, no case back date
380XXXX, no case back date
386XXXX, case back dated I 72
6167XXX, --------------- (1980 Sub 1680, VE clasp code)


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