Bumper was made until 1958, I suppose your watch is 1960. The only way to be sure is open the watch
At that time they didn’t use to indicate the caliber
Thanks I will go to a watch repairer to open it I hope it’s a 133.8 I know someone
who has a Zenith Captain from early 61 with a 133.8 movement there was probably an overlap !
There is another way. I’ll give you a hint—it has to do with the term “bumper.” 😀
The good Old give it a bit of a shake and see if it bumps 😗
do you have an extract for yours? It’s stunning
No extract.
There is some nice ones owned by members here.
https://omegaforums.net/threads/whos-in-the-captain-club.83547/
N NobagelsHi
I’m new to this forum and perhaps a silly question. But isn’t the bumper movement with calendar a caliber 71?