there's no full page spread in Sala on this case, so that leaves us with the archives photos at the end of the section, which don't identify cal or case diameter, which makes it a bit harder. It can also be very hard to tell exact case ref from these photos as many cases look very similar. All that being said, if you case is not plated, then we must assume it is either a 122XX or 123XX, and that leaves only two options that jump out to me in the sala archives, one of which is 12236, pictured below with link below that
View attachment 655109
https://www.vesperco.com/soldwatches/2015/6/1/universal-geneve-nos-compax
HOWEVER, vesper identifies this as a 35mm case and does not identify cal, so assuming that is correct, it cannot be an option, and moving along the next potential is 12316, for which I can only find one photo, and no other details, so I don't know case dims or cal...
View attachment 655112
of course, I'm sure Sala archives photos are not complete, so perhaps there are other options as well......
Click to expand...