A new must read on Longines icons website

Posts
8,200
Likes
28,910
Just skimmed it, but it seems to be quite comprehensive. Thanks.
 
Posts
6,702
Likes
10,486
Superb research
 
Posts
3,639
Likes
8,416
Amazing article. Also explains a question from the UG sub forum on why some UG SS cases have a seam on the back of the lugs (made using compression instead of milling from a solid block).