Hi
Just wondering if someone help me, not sure how to open this little guy ‍♂️.
It’s girard perregaux gyromatic 14k , 22mm excluding crown.Need wrench 1260 like for Memovox or similar wrench ??

Kind Regards
Artur

 

Hard to tell from that photo. Maybe a side angle would help. It looks like it may be a top loader, but I can't tell.

 

Yeah , watch don’t have a back lid. Case is in one piece ,I attached couple pictures with closer view.