Omega

I am interested to know wether all pre 1970 speedmaster's should have stepped or if you prefer 'piepan' dials? The broad arrow in the eagle has landed thread is a case in point, no step in the dial? Right or Wrong?...  

I would say ref. 2915 up to 2998-2. The dials after that with the cal. 321 movement had the step dial. That dial on the watch you pictured appears to be from this era.

thanks that is new information for me, i have had a 105.002-62 and a CK2998-6 both with stepped dials and Dauphine hour/minute hands. It is great to know that the earlier 2998 and the 2915 had a different dial. Those pictures are great for referencing the... 

Hi The early speedys had domed dials aka no step outer min. Track. The funny thing is I have seen early art work showing the step . Go figure ! Good hunting Bill Sohne

105.003 105.012 145.012...