Croton Aviator Sea Diver Chronograph (Ref. 107) "Yachting"

The Chronomaster range of watches from Nivada Grenchen and Croton were produced in a time when adventures and exploration were at the forefront of what was happening in the world and within the pop culture of the 1960s.  Within the expansive world of vintage timepieces, there is no uncertainty that vintage tool watches hold a particular position within the minds of numerous collectors. The 1960s and 1970s were what we now know as the golden era of sports watch design where the form of a watch needed to meet its intended function to support the adventures that the watch was created for. Nivada Grenchen or Croton in the States was founded in Grenchen, Switzerland in the 1920s by Jacob Schneider, Nivada Grenchen was actually one of the first watch brands to manufacture automatic watches. Nevada encompassed another modern wristwatch innovations as well, creating waterproof and “rustless” watches that would stand up to the rigors of the outdoor adventures they were creating a watch for. 

This Croton Chronomaster Aviator Sea Diver ref. 107 “yachting” utilizes a Valjoux cal. 7733 chronograph movement with a simple and no-nonsense dial that is beautifully executed and in flawless condition, featuring a vibrant red and blue 10-minute count down on the left sub-dial. The classic large stainless steel 38mm stainless steel case with long and angled lugs and The case is outfitted with an aluminum minute/hour bi-directional bezel that is not only unique but useful. The Aviator Sea Diver covers all of these classic sport watch queues from this golden era of classic sports watch design.


Stock # CTNCASD107Y
Brand Croton
Style Aviator Sea Diver
Model 107
Serial 031
Size Men's
Material SS
Dial Black "Panda"
Millimeters 38mm
Bracelet 2pc Handmade Leather Strap


The angular case is in beautiful condition and is believed to remain unpolished showing sharp lines that show light, honest signs of use. The bi-directional bezel is in remarkable condition, showing light signs of use and remaining deep black in coloration. The unsigned crown and large pump pushers remain original to the watch. The case back retains its factory engraving in clear and visible condition. The watch will come supplied on a 2pc handmade leather strap.


The matte black dial is simply stunning and remarkably well preserved, showing absolutely no blemishes or signs of wear. The white tachymetre scale is in perfect condition as well. The sub-dials are clean and bright white, the red and blue 10-minute countdown portion of the left sub-dial is in perfect condition. The tritium filled markers have aged to a lovely yellow coloration and show no degradation when inspected under U.V. light. The original tritium hands match the dial perfectly and exhibit no degradation when inspected under U.V. light.


None. The watch is keeping time and functioning perfectly, previous service history is unknown.