these both belonged to his great grand father who served in ww2. He won't let me get the Omega opened, but model and date would be cool. Said he got the Omega in the 50s and the Hamilton in ww2

 

Well, it is a Seamaster 30! The caliber should be one of the 260 series, I would guess a 268 or 269. The date could be known thanks to the caliber serial member, but it should be later that 1962.

 

Looks like it says Seamaster 30 on the dial, so probably a Seamaster 30 from the early 60's.

 

I sure as hell hope he meant reference number.
https://www.hodinkee.com/articles/the-value-proposition-vintage-edition-omega-seamaster-30

 

Nice linen dial, isn't it?

 

Very just

needs a few fixes..

 

Not the dial though

 

By the way, your Hamilton is a Beldon model which was first offered around 1951.

 

Sad about the lug on it

 

Did the guy jackhammer for a living?

 

I love how everyone back in the day just wrote their social security numbers on things all Willy Nilly... But I do like that dial

 

Seamaster 30, Cal 269. The crown has been changed. Leaving the hand loose is going to scratch up the dial...

https://www.omegawatches.com/planet-omega/heritage/vintage-details/14420/

 

To identify movements, one of my sources is RANFFT Watches (www.ranfft.de). it's a compiled database over many years.
include lots of additional info on various Mfg, calibres and even has pictures (to help with identification.
not all inclusive (what is??) but a reliable source.

for these Omega's his database shows some differences in the various calibre's

family/generations:
sub second:
30 : 15 jewels, no shock protection
30T1: 15 jewels, no shock protection
30T2: 15 jewels, no shock protection
30T2PC: 15 jewels, Incabloc
260: =30T2 since 1949, 15 jewels
261: 17 jewels, antimagnetic
262: 17 jewels, excenter regulator
265: 15 jewels, antimagnetic
266,267: 17 jewels, antimagnetic
268: ring- instead screw balance
269: flat- instead Breguet-hairspring
sweep second:
30SC : 16 jewels, no shock protection
30T1: 16 jewels, no shock protection
30T2SC: 16 jewels, no shock protection
30T2SCPC: 17/18 jewels, Incabloc
280: =Omega 30SC T2 since 1949, 17 jewels
281: 17 jewels, excenter regulator
283,284: 17 jewels, antimagnetic
285: ring- instead screw balance
286: flat- instead Breguet-hairspring

if this info is correct, how did you arrive at the conclusion it was a Cal 269? I'm curious.

thanks

 

Seamaster 30s came in these configurations.
with cal 286 - sweep second
with cal 269 - sub second.

So assuming the dial is original to the watch, & his friend's grandfather didn't change anything else apart from the crown, it should be a cal 269.

 

You're 0-2 tonight.

 

The SM30 should look very nice when cleaned up and serviced.
I'd like to see the dial in better light, one of my favourite patterns.

 

trying get him to bring them out again

 

Hi AveConscientia

I recently purchased a watch very similar to your Seamaster 30 as my first Omega, it's due back from a clean and service tomorrow. The case is a bit worn but I've no problem with that, it's 2 years older than I am and has survived a lot better than I. Anyway mine is indeed a cal 269 movement with a case ref 14389.

If you haven't found this link already it's worth a read, this is how good it can look
https://omegaforums.net/threads/1962-seamaster-30-cal-269-linen-dial.15132/

Here are a couple of before pictures of my watch; looking forward to getting it back tomorrow.