We all know: Omega was one of the strongest and probably the strongest Swiss watch brand in the 1970s. Numerous innovations left their laboratories and its not a secret they were the driving force in CEH joint venture project Beta21 -- the Swiss lab to create the first quartz wristwatch.

And here we see the chronological ordered Beta21 & Beta22 stream for Omega, from left to right: the historical important Ebauches SA (ESA) Beta21 prototype, the initial series Beta21 in solid gold, the later steel Beta21 and a beautiful example of a 1973 Beta22.