1675 case back date

[timnik]

Hi

Can anyone tell me what date my GMT 1675 should say

It’s serial is 206xxxxx non hacking movement (1969 I reckon)

It’s a mk 1 dial with long e

I inherited it in 2004 from my father.

I believe he owned it from new

I’ve had it serviced twice since 2004

I’ve never removed the case back and I’m wondering what date or range of dates ought to be stamped on there

Thank you in advance

[baumare]

Here's a page with all the serial number, I believe yours should say IV68

https://www.rolexforums.com/showthread.php?t=350245

[springer]

1968.

[timnik]

Thanks Springer and Baumare