GMT-Master Concorde 1675/8
c. 1960–198010 variants
Solid yellow-gold 1675. Early cases lacked crown guards, which arrived a few years after steel. Known as “Concorde” after a 1968 Rolex advertisement. Hands vary: Concorde batons, alpha, or Mercedes. A black dial with black bezel was offered from the later 1960s; later gold examples have brown nipple dials.