Thought I would clarify the cal''s of movement as I have seen some confusion out there on the Internet....they are as follows-

.... non date 17 jewels = 550 cal// non date 24 jewels = 552 cal// date version 17 jewels =563 cal// date version 24 jewels = 565 cal​

 

Respectable Member MyVintageOmega

This is a very important information.

Thank-you.