Hey all. Can any one help me identify when this case back might have been made or at least when it was not made. Even approx dates would be good. Also any ideas on who the manufacturer was, not seen the 'kb' stamp before. Image attached

Thank you

 

Guessing some time in the 1980s. They typically had dates stamped through the late 70s.

 

That's great, thanks. I have heard many people say ' typically' are there known exceptions ?

 

In my short time on the forums I have not seen any claimed to be from the late '60s or '70s that were not date-stamped. And even with a little googling I could only find 'likely late '80s' for a case back like the one you show.

From speedmaster101.com (http://speedmaster101.com/overview-1/): "Here we cover Speedmasters produced over the first 21 years, up to and including the 145.022-78, which was the last year Omega marked the inside case back with a date."

 

thanks BlackTalon. That what also my conclusion, but nice to get another opinion. cheers