PeterCDE
10167
I had this feeling
it came from there.
Now GP sold a lot of watches to South America, but unfortunately many pieces are not properly serviced and often come with neutral cases when there was a solid gold case before.
But the missing calibre is in fact a miracle; i still can?t make up my mind what may have been the reason to do so, as the rest of the movement engraving is likely the other versions i?ve seen so far. Even the jewel count is included, but no statement if it is an adjusted piece.
So that?s another little mystery of the past to be solved in the future 
Best,
Peter
That?s an interesting piece
Hi Syuji, interesting! I suspect this to be a 1940?s GP 27 or GP 30 calibre (based on an AS1130 ebauche), of which GP had several versions. These are 13 ligne (almost 30mm) movements and quite nice ones, very reliable and sturdy. Here?s another one: What ...
GP from South America
I have an another vintage GP with no cal.# on. Both are from South America. It's interesting.
That's a nice sized GP . . .
Syuji: Thanks for sharing so many of your watches with us. I like nothing better than to see watches that people in the Forum have and you seem to have many interesting GPs. Please, keep them coming! Regards, Will
If you say so, here's another vintage GP!
This is a smaller size (32mm diameter without crown) seahawk....
