Thanks..
By: tdn.dk : November 4th, 2012-01:56
I learn a lot here! I guess the conclusion is, it is a 18''' variation of the cal. 19''' properly a standard grade B. According to Omega a 18''' is 40,7 mm, and the cal. 40,6 was actually only 40,0 mm i case diameter (and was first made in 1923). Accordin...