903 St II Navigation Chronograph 903.090 - Black Dial - Full Set - 2026

903 St II Navigation Chronograph 903.090 - Black Dial - Full Set - 2026

The Sinn 903 St II is the Frankfurt manufacturer's modern navigation chronograph, a direct evolution of the pilot slide-rule instruments that first established Sinn's reputation. This 903.090 variant pairs a sunburst black dial with three silvered sub-registers and a bi-directional slide-rule bezel, driven by a column-wheel La Joux-Perret L110 automatic movement.

Details:

• Reference: 903.090
• Year: 2026
• Case Size: 41mm, stainless steel, polished and satin-finished
• Bezel: Bi-directional continuously rotating slide-rule bezel with logarithmic scale
• Dial: Sunburst black with three silvered sub-counters at 3, 6 and 9, date at 4:30, hand-applied hybrid ceramic luminous markers
• Movement: La Joux-Perret L110, automatic column-wheel chronograph, 60-hour power reserve
• Bracelet: Fitted on black Hirsch alligator-embossed leather strap with steel pin buckle; original Sinn fine-link stainless steel bracelet included
• Water Resistance: 200 meters

Set Includes:

• Original outer box
• Sinn model series 903 booklet
• Warranty booklet
• Original Sinn fine-link stainless steel bracelet
• Bracelet adjustment tool and spring bar tool

Condition:

• Very good condition with light signs of wear
• Dial, hands and luminescent markers are clean with no visible damage
• Crystal free of significant scratches
• Movement running, all functions operating

The 903 lineage traces back to the pilot slide-rule chronographs Sinn produced from the 1980s, and the current St II generation refines that heritage with a column-wheel La Joux-Perret L110 automatic movement rated to 200 meters through a sapphire exhibition caseback.