Morning all, I've come across a cool old Omega that I'm struggling to value so I'm reaching out to see if anyone has any guesses to what ref this might be. It's got a simple Omega dial, with second sub dial that has nice guilloche. The movement is a cal 267. Unfortunately the case back isn't original, so the ref isn't readily available. That's why I'm hoping some of you experts can point me in the right direction. I've done a lot of searching online trying to match it up with other pics, but no luck yet. Any help is greatly appreciated!