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Omega

copper on beryllium

 

Starting in 1941 in some cal. 30 was introduced the so-called “de luxe finish”, a double copper plating on beryllium bronze (an alloy of beryllium and 2.25% copper) that made the movement more resistant mechanically and to oxidation, as well as aesthetically pleasing to the eye as it looked as rose gold. The “deluxe finish” was completed by curved fine brushing. All Rg chronometres had this finish.

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