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#1 |
TRF Moderator & 2024 SUBMARINER Patron
Join Date: May 2007
Real Name: Larry
Location: Mojave Desert
Watch: GMT's
Posts: 43,349
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Omega Serial Number Chart..
It is difficult to date an early Omega. Until recently when Omega started to put the serial number on the lugs, the serial number is usually found on the movement so it requires that the caseback be opened or the movement taken out..
Never the less, if you have the number here is a chart for dating your Omega... http://watches.ryanrooney.com/omegasn.html ![]()
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(Chill ... It's just a watch Forum.....) NAWCC Member |
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#2 |
Banned
Join Date: May 2008
Location: USA
Posts: 3,185
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Here's the problem with using Ryan's chart (or any chart for that matter):
Every Speedy Pro has a unique number on the escape wheel bridge. (On later model Speedy Pros, this number is also engraved on the back of the 7:00 lug.) Most refer to this as the movement number but more accurately, this number should be called the "escape wheel bridge" number. As they are machined and engraved, these individually numbered bridges are collectively placed in parts bins awaiting assembly into the movements. During the assembly process, these numbered bridges are randomly selected from the bins and installed along with the other parts. No one takes the time to remove them from the bins in order; i.e., first in, first out. Note that this selection process might permit a bridge to sit in a bin for years before being used. Once assembled, the movements are "put on the shelf" for later installation in the cases. Again these movements are randomly pulled for installation in the cases. No one takes the time or the effort to insure "first in, first out". It may be some time (even years) before an assembled movement is installed in a case. Obviously, the parts bin may contain a mixture of bridges produced over the years a particular movement was produced. For example, the cal. 1863 has been in production since the mid-1990s. The parts bin could conceivably contain bridges manufactured and numbered in 1996, or any year since, creating the possibility that a movement assembled in 2008 might have a bridge number dating from 1996. Likewise, a movement assembled in 1996 could sit on the shelf for years until being installed in a case in 2008. I'm not a mathematician but the probability of the movement/bridge numbers providing any useful (i.e., accurate) information regarding date of manufacture is negligible in my opinion. And how do we really date a Speedy Pro? Is it the date the bridge was machined and engraved, the date the movement was assembled, the date the watch was assembled, the date the watch left Bienne, or the date it was sold at retail? If you buy a new Speedy Pro (which I have never done and do not recommend anyone to do), just use the date on your receipt and enjoy. If you buy pre-owned, don't even worry about dating your Speedy. Your "precious" will give you years of reliable service regardless of its age. (My 105.012 Speedy just returned from its first repair, a "mainspring transplant", after 40+ years of enjoyment.) Note that some use the date engraved inside the caseback of vintage Speedies (i.e., 105.012-65) as the watch's year of manufacture. Again, the "part's bin" factor could result in a "65" caseback being used in the assembly of a watch in 1969. For an interesting discussion relating to this issue, check out this thread regarding cal. 321 moments: (Being relatively new to TRF, I trust it is OK to link to other forums so long as the thread is informative rather than controversial.) Fr. John+ |
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#3 |
"TRF" Member
Join Date: Apr 2009
Location: Somewhere
Posts: 150
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Knowing John R. Diethelm well and having communicated with him many times, I can say he is verry knolageable in most cases. But I also know he has been wrong many times in the past (sorry John please do not hate me my friend) mostly due to the bad record keeping by Omega prior to being sold to the Swatch group and the fact that they have not made an in-house case of movement after the 80's.
The statement that Omega did not make a 321 movement after 1960 is not correct at all, and in fact they assembled them from existing repair parts right up to mid 1968. That said, Omega did purchase and produce movements in batches especially chronometer grades. The serial numbers will not indicate a actual date of production but will get you close + or- a year. Most of the 432 movements were supplied pre assembled including the stem but not the dial. Omega simply added the dail and hands and installed the movement into the case. Omega never sold a replacement serial numbered bridge for repair, if needed they would supply a complete movement but this was done VERY RARELY. Farel |
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#4 | ||
Banned
Join Date: May 2008
Location: USA
Posts: 3,185
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Quote:
In two instances over the years I have had occasion to replace escape wheel bridges in cal. 186# movements. Both replacements came complete with movement numbers. Perhaps these were isolated incidents but I have had other watchmakers report replacement bridges with numbers. I have yet to confirm a replacement bridge without a number. As for the cal. 321 movement, Omega may have assembled movements from repair parts through 1969 but it is my understanding that all assembled movements provided to Omega by Lemania ceased in 1960. As for John Diethelm, it was this email which erroneously reported the model of the Speedmasters worn on the moon. Quote:
Ah, the history and mystery of the Omega Speedmaster Professional. ![]() Fr. John† |
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#5 |
Member
Join Date: Jan 2010
Real Name: john
Location: San Diego
Posts: 46
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where can i look upnumbers of a sppedmaster racing???
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#6 |
Member
Join Date: Jan 2010
Real Name: john
Location: San Diego
Posts: 46
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anyone familliar with dallas watch store
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#7 |
"TRF" Member
Join Date: Mar 2010
Real Name: Jani
Location: Finland
Watch: Speedmaster 2531.8
Posts: 1
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I didn't found any newer serial numbers to Omega watches than year 1998. So here is another link to Omega serial numbers. You can find Rolex and Panerai serials there also.
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#8 |
"TRF" Member
Join Date: Apr 2010
Location: Nashville
Posts: 1
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Ranchero scam?
I found the below listed watch on line. What should I be aware of before I buy?
"If you are a watch collector you know how rare this watch is. It was only made by Omega a few years in the early 1950's and they sell for $2000 plus in running condition. This particular MINT (professionaly restored) watch has a beautifully re-finished perfect dial, newer OMEGA case and hands, Omega signed crown ,crystal and Railmaster caseback. It has the Omega cal. 267 17 jewel manual wind movement that keeps very good time. To me the best thing about this Omega Ranchero is its housed in a 39mm case instead of your typical classic watches of that time (30-34mm) which are too small, this size is more like a Rolex submariner. I'm asking $1000 obo (not going to give it away) cash or a possible trade for another OMEGA, Rolex, TAG, or Brietling in MINT condtion. Will send pics of the back (pink gold Omega movement) for serious buyers, must see to appreciate... Go to ebay and type in Omega Ranchero to get an idea of its rarity and value" |
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#9 |
"TRF" Member
Join Date: Jul 2009
Location: Huntingdon valley
Posts: 66
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need some help with my omega 321
Hello John
im looking some info about my watch its Omega 321 Serial number is 24002932 Thanks |
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#10 |
"TRF" Member
Join Date: Aug 2006
Real Name: Vernon
Location: C-a-n-a-d-a
Watch: 16600
Posts: 5,641
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I think the link may have changed - here's the one that I found from that site.
http://ialreadyhaveawatch.com/watch-...mbers-by-year/
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I'm just a cook... |
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#11 |
"TRF" Member
Join Date: Mar 2011
Location: ME
Watch: Vintages
Posts: 565
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The links mentioned in this thread appear to now be spam, or a shopping directory of some sort. Here's a good link:
http://chronomaddox.com/omega_serial_numbers.html |
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#12 |
"TRF" Member
Join Date: Nov 2011
Location: East Sussex, UK
Watch: 126300
Posts: 73
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I can`t find my Seamaster in those charts.Its serial number starts with 6036xxxx.
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#13 |
"TRF" Member
Join Date: Nov 2011
Real Name: Stoyan Denev
Location: Bulgaria
Watch: Submariner 14060M
Posts: 48
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May be there is some problem with you serial in this case ;)
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#14 |
"TRF" Member
Join Date: Jan 2012
Location: united kingdom
Posts: 4
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I can`t discover my Seamaster in those index charts.Its sequential variety begins with 6036xxxx.
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#15 | |
"TRF" Member
Join Date: May 2012
Location: Kent
Posts: 242
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Quote:
http://chronomaddox.com/romans.html Maybe I should stop being concerned by that? |
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#16 |
2024 ROLEX SUBMARINER 41 Pledge Member
Join Date: Dec 2010
Real Name: PaulG
Location: Georgia
Posts: 41,439
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Both charts suffer from interpolation errors due to small sample sizes. There were 60xxxxxx SMPs sold in 1998 as well as other Speedy SNs in same range sold in 2000's...
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Does anyone really know what time it is? |
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#17 |
"TRF" Member
Join Date: Feb 2013
Real Name: Tom
Location: Kauai
Watch: 1675-1680-16750
Posts: 3,346
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Excellent response jmsrolls! Love my OSP I am assuming the same assembly goes hand in hand for my watch? Needless to say for me I bought my watch and my wife's match omega because I wanted them.
Aloha from Kauai. Tom |
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#18 |
2024 ROLEX SUBMARINER 41 Pledge Member
Join Date: Nov 2011
Location: Thousand Oaks, CA
Posts: 1,443
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I went to the Omega store in the mall and had them look up the date for me. But mine wasn't that old.
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#19 |
"TRF" Member
Join Date: Dec 2009
Location: London
Posts: 2,081
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The Speedmaster chart is 12+ years out. I saw a nice Speedy Pro for sale a few weeks ago with an extract from the archives exactly dating it's production to late 1979. It's serial/movement number dated it about 12+ years later on the chronomaddox chart.
Edit - Here you go - http://www.chrono24.co.uk/omega/spee...-id4345304.htm |
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#20 |
"TRF" Member
Join Date: Apr 2019
Location: united states
Posts: 92
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store recommendations in Atlanta anyone
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#21 |
"TRF" Member
Join Date: Apr 2013
Real Name: Les
Location: Singapore
Watch: Rolex
Posts: 25
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Thanks for sharing
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#22 |
"TRF" Member
Join Date: Jul 2013
Location: Michigan
Watch: Datejust 41
Posts: 32
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Hi all,
All the charts I've seen stop in 2008 with "84---". What year would an Aqua Terra starting with 87--- be from? |
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#23 |
"TRF" Member
Join Date: Feb 2020
Location: PA
Posts: 10
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Is there a chart that provides the Omega serial #s?
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#24 |
"TRF" Member
Join Date: Apr 2021
Location: Orange county, ca
Posts: 21
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MY 8900 Planet Ocean has 87--- sn and is stamped 03/2018 in AD...and I think 8900 planet ocean debuted in 2016. Though stamping date not necessarily means manufacture date, Maybe 87--- are 86 after, assuming incremental order?
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#25 |
2024 Pledge Member
Join Date: Jul 2019
Real Name: Zach
Location: USA
Posts: 1,496
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My Seamaster serial is 5000xxxx. No way it was made in 1986?
Correction, looking at wrong number |
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#26 |
"TRF" Member
Join Date: Jan 2012
Real Name: Matt
Location: Sydney
Watch: 5513
Posts: 12
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You must know that.
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#27 |
"TRF" Member
Join Date: Jan 2012
Real Name: Matt
Location: Sydney
Watch: 5513
Posts: 12
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But not always.
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#28 |
"TRF" Member
Join Date: May 2021
Location: Alaska
Posts: 5
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cool
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#29 |
"TRF" Member
Join Date: Jun 2023
Location: Central Florida
Posts: 2
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OMEGA Boutique
Phipps Plaza Mall 3500 Peachtree Rd. NE Space 1015D 30326 Atlanta United States of America |
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#30 |
2024 Pledge Member
Join Date: Apr 2015
Real Name: Jo
Location: Singapore
Watch: Rolex 18078
Posts: 876
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very useful information.. thanks for sharing~
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From Singapore, long-time forum member, recent Pledge member. Instagram (2 accounts) - jothehipster , strapsxcalibre . Happy to interact with fellow watch collectors around the world. |
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