A vintage Nivada Grenchen Chronomaster Aviator Sea Diver Chronograph from the 1960s, featuring a manual Valjoux movement and bi-directional friction bezel.

• Condition: Pre-owned, no service history
• Case size: 38.5mm
• Lug width: 20mm
• Movement type: manual Valjoux

This Nivada Grenchen Chronomaster Aviator Sea Diver Chronograph is a rare find, featuring a robust manual Valjoux movement and a unique design with tritium on the dial. The watch has been aged to perfection and retains its original charm.

• Condition: Pre-owned (circa 1960s)
• Case size: 38.5mm
• Movement accuracy: -1 to -7 sec/day (regulated)
• Lug width: 20mm

A circa 1960s Nivada Grenchen Chronomaster Aviator Sea Diver Chronograph featuring a robust manual Valjoux movement, bi-directional friction bezel, and tritium on the dial. This era of time pieces combines utility with charm.

• Case size: 38.5mm
• Movement type: manual Valjoux

This is a mechanical hand wound Nivada Chronomaster Aviator Sea Diver Orange Boy Chronograph in mint condition, with very minor strap changing marks on two of the lugs.

• Condition: Mint condition
• Model type: Mechanical hand wound

A Nivada Grenchen Chronomaster Aviator Sea Diver Chronograph from the 1960s featuring a manual Valjoux movement and unique design elements such as brad arrow hands, recessed sub dials, and a bi-directional friction bezel.

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