Nivada Grenchen Chronomaster Aviator Sea Diver 105-903006

This reference number identifies the two-tone version of the final generation automatic Chronomaster. It shares the same 42mm cushion case and Valjoux 7750 movement as the other Ref. 105 models but is distinguished by its stainless steel case with gold-plated accents. Typically, the bezel, crown, and chronograph pushers are gold-plated, creating a look that balanced sportiness with the luxury that was highly popular in the late 70s and early 80s. This model was often paired with a two-tone bracelet and a dial featuring gold-tone hands and markers to match the case accents. The 903006 completes the full suite of stylistic offerings for the Ref. 105 family, sitting alongside the all-steel, PVD, and all-gold-plated variants. It represents a direct response to a major market trend and is a clear indicator of the fashion-conscious design direction of the era.