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-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

This Nivada Grenchen Chronomaster Aviator Sea Diver Orange Boy is a stunning manual wind chronograph with a 38mm case. It features a Sellita SW510 movement and comes with original accessories.

• Condition: Like new, in box, hardly worn
• Case size: 38mm diameter
• Movement: Sellita manual wind cal SW510
• Strap included: Black leather strap (new and unworn) with signed NG buckle

This Nivada Grenchen Chronomaster Aviator Sea Diver is a manual wind chronograph with a Sellita cal SW510. It has been worn sparingly and presents as new, coming with original box, papers, leather strap, and rubber strap.

• Condition: like new
• Movement: Sellita manual wind cal SW510
• Case material: unknown (not specified)
• Strap included: [object Object],[object Object]

This watch is a retro model of the legendary Chronomaster, featuring a GMT function, bi-directional bezel, and bicompax chronograph. It has a 38mm case, Sellita 510M movement with 63h power reserve, and 100m water resistance.

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