got offered an all original seamster as described by seller...
but couldn't find any lead to this design of seamster with subsecond..

appreciate any opinion.
thanks

 

What are the numbers inside the caseback?

 

C2577-1...but can't seem to find any face design like this...

 

A ref 2577 should not have a sub-seconds.

 

That reference should house a caliber 351 or 354, these are centre second movements, not sub-seconds.
I

 

Looks like maybe a ref 2576 to me.

 

I think Gordon may be right.
What's the caliber marking under the balance wheel?

 

Cal 354

 

Cal 354 is a SC movement so something there doesn't add up, the sub second movements were in the 330 and 340 series:

http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&Omega_354

 

Looks like a later service dial.

Sub-seconds movement would be cal 342 with lever regulator as seen on OPs watch or 344 with swans neck.

 

That's a good information there in the link...

SC stand for subsecond?

 

SC is for Centre Seconds. PC is for Small Seconds (Sub-seconds).

 

Sorry to pick up an old thread, but Ive come across another C2577-11SC that has a subsecond. Its contains a cal 344. Do I assume a donor dial and movement in a 2577 case? Case lugs look quite chunky for a 2577 case... Thoughts?

 

Sorry to correct you Jim: SC is indeed for central second (seconde centrale in French), but PC is for shock protection (protection contre les chocs in French). There is no abbreviation for sub second: there is simply nothing written as far as the second hand is concerned.

 

My apologies François, and to all others who may or may not have noticed this typographical error (that means "stuff up").

While the simple substitution of a another letter in formal diplomatic, government or even court documents, may have severe ramifications, it is nothing, and I really mean NOTHING, compared to the confusion that it may cause on Omega Forums.

Therefore! To clarify, SC is indeed for central second (seconde centrale in French), and PS, repeat PS and not PC, is the notation for Small Seconds.

I gather that this is again derived from the French language, i.e.: PS = Petit Second.

Meilleures Salutations

Jim

 

I guess PS would indeed mean petite seconde (the French for small second, which means sub second). But I aknowledge I have never seen that on a case back. Jim, do you have an example? Or is it only for reference elsewhere that the case back?

 

I have never seen it in a caseback, but it's a descriptor in Omega's caliber references, e.g.: AJTT PP 791.

 

I’m not sure how to confirm, but it could be a 2576 case with a 2577 case back?

More pics of that dial?