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Discussion Starter · #1 ·
For sale the rare original Sinn 203 Arktis circa mid 2000s. Worn condition but case in overall good condition. All features work as they should. All chronograph functions work and reset properly. Do not have exact +\- daily however watch is not off by any noticeable amount. Crystal in great condition. The dial is original but has some markings that developed around the 6 and if you look closely or with magnifier between 4 and 5 as pictures. Not the original owner not sure how this developed. Replacement dials are still available from Sinn last time I checked however it was not an issue for me. No box or papers included. Extra bracelet links included original bracelet.

$1800 CONUS. May be open to trades for other Sinn, Damasko, or Tudor.

Technical details

Mechanical Movement
• Valjoux 7750
• Self-winding mechanism
• 25 bearing jewels
• 28,800 semi-oscillations per hour
• Seconds stop function
• Shock resistant as per DIN 8308
• Anti-magnetic as per DIN 8309

• Case made of stainless steel, polished
• Sapphire crystal glass in front, anti-reflective on both sides
• Case back screw-fastened
• Crown screwable
• Push-pieces screwable
• Meet the technical requirements for waterproofness, as set out in standard DIN 8310
• Pressure-resistant up to 30 bar (= 300 m water depth), 20 bar with transparent case back
• Low pressure resistant

• Hours, minutes, subsidiary seconds
• Date display
• Day of the week display
• Chronograph
• Diver’s bezel with minute ratcheting and luminous key mark

SINN Technologies
• Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
• Temperature resistance technology, therefore functionally reliable at temperatures from -45 °C up to +80°C

Dimensions and Weight
• Case diameter: 41 mm
• Band lug width: 20 mm
• Case thickness: 16 mm
• Weight without strap: 90 gramme

Dial and Hands
• Blue electroplated dial
• Indices coated with luminescent colour
• Hour, minute and second hand coated with luminescent color

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