Does anyone know the name of the dial maker with this mark on the reverse of dials? The mark appears to be gCB or gEB. This is from a UG but the same mark is on the Omega dial in the thread linked below. https://omegaforums.net/threads/omega-speedmaster-professional-dial.109103/
This thread contained the collective body of knowledge on dials... https://omegaforums.net/threads/swiss-dial-manufactures-of-the-1930s-1940s.79585/ ...although I don't see "gEB" within.
What a great resource, thanks. These markings will be mid to late 1960s I think, so perhaps pre-date most of the dial makers listed in this thread.