Croton Chronomaster Aviator Sea Diver (Ref. 105/9865) 'Valjoux Cal. 92', 1960s

Dealer description — Craft & Tailored

Introduced during the golden age of purpose-built sports watches, the Chronomaster Aviator Sea Diver was conceived as a true all-purpose instrument, combining the capabilities of a diving watch, aviation timer, racing chronograph, and yachting regatta timer within a single, highly distinctive design. Produced by Nivada Grenchen and marketed in the United States under the Croton name, the Chronomaster emerged at a time when exploration and adventure strongly influenced both popular culture and watchmaking. Its rotating elapsed-time bezel, tachymeter scale, highly legible luminous display, and red regatta countdown indicator reflect an era when every visual element was designed to serve a practical purpose. This 1960s example, reference 105/9865, captures the model at its most compelling. The deep black dial is punctuated by warm tritium accents, oversized arrow hands, contrasting subsidiary registers, and the unmistakable red countdown sector at 3 o’clock. Beneath the surface is the manually wound Valjoux caliber 92, a respected column-wheel chronograph movement prized for its traditional construction and crisp operation. Equal parts rugged tool watch and expressive mid-century design, the Croton Chronomaster Aviator Sea Diver remains one of the most charismatic and functionally ambitious chronographs of its era. SPECS Stock # CTNCASD105-4 Brand Croton Style Aviator Sea Diver Model 105 / 9865 Serial 30XXX Size Men's Material Stainless steel Dial Matte Black Millimeters 38 Bracelet 2pc Handmade Leather Strap CASE & BRACELET The excellent case retains crisp edges and strong factory dimensions throughout, while exhibiting nominal evidence of prior polishing and light signs of use. The original "flat top 4" bezel is in excellent condition, showing minimal wear and no notable fading. The case retains its original, unsigned crown and pump pushers. The case back retains its factory markings in fully legible and crisp condition, and shows light tool marks from use. The watch comes supplied on a 2pc handmade leather strap. DIAL & HANDS The original matte black dial is exceptional, remaining in virtually perfect vintage condition, with no damage or age present. The early tritium lume plots feature a golden patina and exhibit no notable degradation when inspected under UV light. The original tritium "broad arrow" hands match the dial lume almost perfectly and exhibit no degradation under UV light inspection. ACCESSORIES