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Magnifying glass icon with a thick handle and a partial dark arc inside the lens.
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A vintage Nivada Grenchen Chronomaster Aviator Sea Diver watch with a black dial, tan leather strap, and silver case, model 8500 / 3730.
Garrett Silverstein
0
10 Jul 2025
July 22, 2025

Nivada Grenchen Chronomaster Aviator Sea Diver 8500 / 3730

This reference is considered by collectors to be an early or alternative designation for the model more commonly referenced as 85004 / ...
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A vintage Nivada Grenchen Chronomaster Aviator Sea Diver chronograph wristwatch with a black dial and metal strap on a blue background.
Garrett Silverstein
0
10 Jul 2025
July 22, 2025

Nivada Grenchen Chronomaster Aviator Sea Diver 85017 / 4531

The Ref. 85017 represents the functional peak of the manual-wind Chronomaster series from the mid-1970s. Its defining feature is the us...
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A Nivada Grenchen Chronomaster Aviator Sea Diver 105/9855 watch with a black dial and brown leather strap.
Garrett Silverstein
0
10 Jul 2025
July 22, 2025

Nivada Grenchen Chronomaster Aviator Sea Diver 105 / 9855

This reference marks the third and final generation of the vintage Chronomaster lineage, representing a radical modernization to align ...
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Vintage Nivada Grenchen Chronomaster Aviator Sea Diver 105-9870 watch with black leather strap and silver case.
Garrett Silverstein
0
10 Jul 2025
July 22, 2025

Nivada Grenchen Chronomaster Aviator Sea Diver 105-9870

This reference is an aesthetic variation of the Valjoux 7750-powered automatic Chronomaster. While mechanically and dimensionally ident...
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Black Nivada Grenchen Chronomaster Aviator Sea Diver 105-30886 watch with a black strap and silver case, featuring three subdials.
Garrett Silverstein
0
10 Jul 2025
July 22, 2025

Nivada Grenchen Chronomaster Aviator Sea Diver 105-30886

This reference completes the trio of case finishes for the final generation of the vintage Chronomaster. It features the same powerful ...
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Vintage Nivada Grenchen Chronomaster Aviator Sea Diver 105-903006 watch featuring a black dial and brown leather strap.
Garrett Silverstein
0
10 Jul 2025
July 22, 2025

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 c...
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A vintage Nivada Grenchen Chronomaster Aviator Sea Diver chronograph wristwatch with a tan leather strap on a white background.
Garrett Silverstein
0
10 Jul 2025
July 22, 2025

Nivada Grenchen Chronomaster Aviator Sea Diver 105-25249

This is an obscure reference from the final generation of automatic, Valjoux 7750-powered Chronomasters. While it belongs to the Ref. 1...
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A vintage Nivada Grenchen Chronomaster Aviator chronograph wristwatch with a green nylon strap and black dial.
Garrett Silverstein
0
10 Jul 2025
July 22, 2025

Nivada Grenchen Chronomaster Aviator Sea Diver 8221

The Nivada Grenchen Chronomaster Aviator Sea Diver Ref. 8221 is an early and historically significant example of the "do-it-all" tool w...
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A vintage Nivada Grenchen Chronomaster Aviator Sea Diver watch featuring a black dial and tan leather strap.
Garrett Silverstein
0
10 Jul 2025
July 22, 2025

Nivada Grenchen Chronomaster Aviator Sea Diver 85001

Representing the second generation of the iconic Chronomaster, the Ref. 85001 was produced in the mid-1960s. This reference is signific...
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A vintage-style Nivada Grenchen Chronomaster Aviator Sea Diver wristwatch with a black dial, brown leather strap, and silver case.
Garrett Silverstein
0
10 Jul 2025
July 22, 2025

Nivada Grenchen Chronomaster Aviator Sea Diver 85004 / 3730

The Ref. 85004 / 3730 marks a significant technical evolution in the Chronomaster family, produced in the late 1960s and early 1970s. I...
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