Croton Nivada Grenchen Chronograph Aviator Sea Diver

Croton Nivada Grenchen Chronograph Aviator Sea Diver

Croton, Nivada, or Nivada Grenchen: by whatever name they go by, these watches were meant to handle anything. No model of Nivada's typifies this more than the Aviator Sea Diver chronograph. Not only is it a chronograph, but it can be used at sea and in the air. 

Nivada (called Croton in the U.S. due to a copyright dispute with Movado) introduced the Aviator Sea Diver in 1963 and produced it until 1978. It came in many different flavors throughout its fifteen-year run, from versions with white dials to those with black dials, seen here. The most common iteration, featured on this watch, has two chronograph registers at 3 and 9 o'clock; later versions had the addition of a date window.

The registers are black on black, with a red triangle in the 30 minute sub-dial for timing regattas. Nivada used broad arrow hands during the 1960s before transitioning to stick hands in the 1970s. It's the former style that you see here, giving it that classic 1960s look reminiscent of "broad arrow" Speedmasters

An early example, this chronograph bears "Chronograph Aviator Sea Diver" rather than the more commonly-seen "Chronomaster" that would distinguish later versions.

Croton used many different movements for these chronographs, from the Valjoux 92 and 7733 to the Landeron 248. Ours has a Venus 210 cam-operated chronograph movement. Used in many early Breitlings, the Venus 210 was a modification of the Venus 188, which transformed into the Valjoux 7730 after Valjoux absorbed Venus in the 1960s. 

Another salient feature of this watch: the bi-directional bezel, showing 60-minute elapsed time as well as a GMT function. Because, as you can guess from the name, this was meant to be a dive watch as well. Another nod to the diving heritage is the engraving on the case back, which denotes water resistance up to 20 ATM. 

There's no doubt about it--chronodivers like this one are a unique sub-species of chronograph that's sure to catch the eye. 


Stainless steel case is approximately 38mm (excluding crown). Venus Caliber 210 Manually-Wound Chronograph Movement. Circa 1960s.

Overall Condition: Stainless steel case is sharp with crisp bevels and no signs of over-polishing. Case does have faint signs of use and wear in keeping with its age. Rotating bezel is in very good condition with minimal signs of use and wear. Dial is in likewise very good condition with signs of age to the luminescent elements of the hour markers and hands. Unsigned crown. Signed case back has some scratches and deep tool marks but is in otherwise good condition.

Includes one 20mm brown leather strap and two 20mm nylon straps from Crown & Buckle

SKU: TT01164

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