Hi, I have a cal 30T in a case whose internal back number is 10422722. As most of you will no doubt already know, this suggests that the case/watch originates in the 1940s. It's been fitted with a modern plastic generic glass and I'd like to replace it with a genuine Omega one, but have no idea what case style number this represents - or if, in fact, a genuine Omega crystal is even available for it. Any wisdom to share out there? Thanks in advance!
Need pics mate, front shot, a photo of the movement, and a photo of the inside of the caseback at the least, decent resolution and good quality and focus
Here you go - before cleaning it, apologies for the look of it. As you can see, there are no additional numbers on the case back.
Omega didn't use branded crystals or crowns for all watches back then. It's very difficult to assign a case reference to these pre-1948 models. Without the case reference, it's almost impossible to determine if there is a genuine Omega crystal that would fit the watch. I suspect that there is one to fit, it's more a question of which one? gatorcpa
These watches take a generic acrylic crystal (non-ring crystal). Tricky to find the right size since you will need the exact measurement and add a bit to it (say 0.5mm or so) since they have to be a smidgen larger (not the case with the ring crystals which have to be the exact fit). These crystals are cheap and are readily available for under $5 each and can be purchased in bulk on ebay for much less than that.