Hi Art! These may be the Rolex "Blueberry" equivalent....
That's the association I'm having here, anyway. I've always assumed the dials on my "twins" are not original. They're below, with display backs that I had Wuischpard make many years ago -- of course, I still have the original casebacks that are stamped 2366-3 and 2366-4.
But nobody seems to know definitively who made them or how they came into circulation. I looked back in my files and saw that about 16 years ago (and with lots of advice and help from Franco), I did send one of these to a company called Causemann to get some chipped paint touched up -- which Causemann did perfectly. Can you (or someone else) tell me more about Causmann -- if they definitely ever made official Omega dials, why people think these dials might've originally came from Causmann vs. some other dial manufacturer, etc.? I'm really curious now!