grumio
313
I believe this is a 28SC, aka cal 370.
It is based on the sub-second cal 28, aka cal 360. It should be stamped 28 SC under the balance.
These movements were originally introduced in 1944. The nickel finish and serial 9,9XX,XXX serial would both date this movement to around this year.
While they look quite similar to the much more common 30mm calibres, in fact they share almost no parts in common.
It this movement in a watch that you own ?
grumio
this is th Omega R17.8 later called calibre 300 in the 40's
Hi some details of your calibre are here www.ranfft.de Remarks 1949- as Omega R17.8 from 1939 family: 300 (R17.8 until 1949): sub second 301 (R17.8AM until 1949): sub second, antimagnetic 302: sub second, Incabloc, antimagnetic 310 (R17.8SC until ...
It is the sweep second...
Hi Steve, This is a R 17.8 SC supposedly from an early run as it still has the nickel finish. Nickel SC 17.8 movements are not often seen... most are the sub sec versions in rose gold guilt. kind regards Erich
I believe this is a 28SC, aka cal 370.
It is based on the sub-second cal 28, aka cal 360. It should be stamped 28 SC under the balance. These movements were originally introduced in 1944. The nickel finish and serial 9,9XX,XXX serial would both date this movement to around this year. While the...
Right on, Grumio
Yes, it's a 28SC and it's in my collection, Grumio. Here are a few more pics. Regards. Hoi...
That's a nice original piece Hoi.
Looks very much like some of the 30mm chronometer variants. The dial looks well aged aged, but it seems to be quite even. The case looks in nice shape. These 28SC models do turn up from time to time, but they seem to be much much less common than the 30mm...
Ref 2256
Hi Grumio. I guess the 28 is less common just because it didn`t fit into category D _ 13 lignes (30mm or less) at the competions _am I right . I`d also like to ask about ref 2256, because I bought one today without knowing anything about it, the only thin...
This particular...
Hi Hoi, congrats! I have seen that you was successful! I have been involved as far as I had put a snipe on it - but much too low... I would have bought it at a much lower rate for just the movement´s sake as I needed it for parts. It has a 30 T2 SC Rg in ...
37.5 or 39mm?
Hi Erich. The reason I bought it because of the size of the case and a rare ref (?) , the movement is not very important to me (there is another one out there and I won't compete too hard on that ;( ) By comparing to my 2544 and 2545 (39mm cases), it look...
You may be right...
Hi Hoi, You may be right... it really looks like a 39mm case. But do you really think that it is an original case / movement combo?? I suspect it is a put together watch... but I stand to be corrected... regards Erich
The reason I bought it...
Hi Erich. The reason I bought it just because of the case, It's a very early case, it looks big and original. I am not sure if it host that Rg from that day or not but I am sure I will have a huge combo on my wrist and happy as a clam. In the same time, I...
With Rolex...
Hi Hoi, I am not a typical collector of sports Rolexes as most collectors are... There are some "Princes" in my humble collection only because I like these iconic art deco designs - and I like the rectangular cases with the duo dials a lot! But it seems t...