Here is a bit of a technical query. Where does the calibre 420 fit into the Omega scheme of things? After all, during the 1950s one would have thought that Omega had the manual wind calibres completely covered with the 30T2 and it’s derivatives, the 2xx series, which have sub-second and centre-second variants. So why the 400 series calibres, and in what way do they differ from the 200s?

John

 

Hi John

i cant answer your questions

but my first omega was a 1968 cal 420. Not sure why it was made so late, but have to assume that omega made far more 420s than the needed, and used up these excess movements much later on, just to remove them from stock

i,m sure some one will give a better answer soon

cheers, paul

 

Thanks, Paul. 1968 does seem very late for a 420, in my innocence I would have expected a 600 series by then

 

+1 on that, I have a 1964 with a cal. 611

 

Thank you for your input, chaps. There does not seem to be a readily available source of info for the Omega manual wind movements and their technical development - at least not as far as I am aware. Whereas Desmond has done a brilliant job on his site of a detailed study and history of the automatic movements - all from a Constellation perspective, of course, but still very useful for other models too.