This era of time pieces has a lot to offer as they appeared to make the all-in-one utility tool: diver, pilot, chronograph. The charm is evident in the brad arrow hands, recessed sub dials and the dash of red 30 minute subdial for timing regattas—extra sauce—the tritium on the dial has aged a perfect golden pie hue and the bi-directional friction bezel, showing 60-minute elapsed time as well as a GMT function is faded from rotation.

• Condition: Used circa 1960s (no service history)
• Case size: 38.5mm
• Lug width: 20mm
• Movement type: Manual Valjoux

This timepiece comes from an interesting era of Chronographs and vintage tool watches. Not only were these pieces fitted with fine movements and keenly designed dials, but there is also design language and production overlap— specifically ranging from Nivada Grenchen, Croton, and Bulova.

• Condition: Honest wear and no damage
• Movement: Valjoux Cal. 7733
• Crown Type: Bulova crown
• Service History: Unknown

A manual-only version of the Nivada Grenchen Chronomaster Aviator Seadiver Tropical Full Kit with a satisfying wind-up mechanism and great chrono functions. It comes with a bracelet that was purchased separately.

• Condition: Excellent
• Case size: 38mm
• Lug width: 20mm
• Height: 13.75mm

A manual-winding chronograph with a 38mm case, suitable for everyday wear. The watch features a satisfying winding mechanism and works fantastically.

• Condition: Excellent (minor hairline wear on clasp)
• Case size: 38mm diameter
• Lug width: 20mm
• Height: 13.75mm

A Nivada Chronomaster Aviator Sea Diver Broad Arrow in excellent condition, with a clean crystal and full kit of box and papers.

• Condition: 9.5/10 with few hairlines on case side, clean crystal
• Accessories: full-kit with box & papers
• Shipping method: shipped by UPS from Singapore

A vintage Chronomaster Aviator Sea Diver from the 1970s with a Valjoux Cal. 7733 movement, featuring a fun design and daily driver functionality.

• Condition: Honest wear and no damage
• Movement: Valjoux Cal. 7733
• Crown: Bulova signed crown (not original)
• Shipping: Fully insured Fedex shipping in the USA