Instrument Watches
Series 240 C
Ref. 240.021
Sinn
Founded in 1961 by flight instructor Helmut Sinn, the brand has established itself as a leader in professional tool watches. Their innovations include oil-filled cases for perfect underwater legibility and Tegiment technology for enhanced scratch resistance. The brand's expertise spans from pilot chronographs to professional diving watches, with collections like the U-series and 756/956 demonstrating their technical prowess. Each timepiece showcases their commitment to creating robust, functional instruments that meet the highest professional standards.
Families
Instrument Watches
Series 240 C St GZ
Ref. 240.011
Instrument Watches
Series 240 St
Ref. 240.010
Instrument Watches
Series 556 A
Ref. 556.014
Instrument Watches
Series 556 Anniversary
Ref. 556.0103
Instrument Watches
Series 556 I
Ref. 556.010
Instrument Watches
Series 556 I M
Ref. 556.0101
Instrument Watches
Series 556 I Mother-of-pearl W
Ref. 556.0102
Instrument Chronographs
Space Chronograph 140 St
Ref. 140.020
Instrument Chronographs
Space Chronograph 140 St S
Ref. 140.030
Special Edition
Special Edition 956 Adler
Ref. 956.015
Current Listings
![[WTS] Sinn EZM 1.1 S. 25th Anniversary Edition. 500 pcs limited edition. Full Kit.](https://preview.redd.it/2ns6fyzqr50h1.jpeg?auto=webp&s=d6913cd7b0cc73ab92274309384b0f37cc19e3ce)
Sinn EZM 1.1 S. 25th Anniversary Edition. 500 pcs limited edition. Full Kit.
This is a limited edition Sinn EZM 1.1 S, one of only 500 pieces made to celebrate the brand's 25th anniversary.
- Condition: Minty
- Production run: 500 pieces
- Edition type: anniversary edition
![[WTS] Sinn 936 S Black Chronograph Fully Tegimented Limited Edition (100) - New Release](https://preview.redd.it/x6dg1gg6r50h1.jpg?width=640&crop=smart&auto=webp&s=8eac8b9b5c3f01fbd7c903ba67e4710b3644b5b0)
Sinn 936 S Black Chronograph Fully Tegimented Limited Edition (100) - New Release
Recently released limited edition Sinn 936 S Black Chronograph with tegimented case, only 100 pieces produced.
- Condition: New
- Material: Tegimented stainless steel
- Production run: Limited to 100 pieces
![[WTS]: Sinn U50 DS Tegimented on Bracelet Full Kit](https://preview.redd.it/wcobka3hq50h1.jpg?width=640&crop=smart&auto=webp&s=d3ba3d7aab133592dc6a554461d8b2fe2e2c40b8)
: Sinn U50 DS Tegimented on Bracelet Full Kit
This Sinn U50 DS Tegimented is a unique model featuring an individually finished "Dekorschliff" dial, paired with a tegimented submarine steel case. It's a solid everyday/tool watch that feels special.
- Condition: Extremely clean, minimal wear
- Purchase Date: December 2025
- Warranty Status: Still under Sinn warranty
- Bracelet Type: H-Link bracelet
![[WTS] Sinn 856.011 Box & Extra Straps $1500 Shipped](https://preview.redd.it/5tzecziti00h1.jpg?width=640&crop=smart&auto=webp&s=12d0cd1c39db9caf7c416155f0192bdd7aaaf950)
Sinn 856.011 Box & Extra Straps $1500 Shipped
A classic German tool watch known for its clean design and exceptional legibility, featuring a utilitarian aesthetic and rugged everyday performance.
- Condition: Signs of wear with a visible mark on the hour hand and clean crystal
- Case size: 40mm diameter
- Movement: Automatic
- Crystal type: Sapphire
![[WTS] Sinn 356 Pilot Chronograph – Black Dial Classic, Pure Tool Watch DNA](https://preview.redd.it/fu8syovgh00h1.jpg?width=640&crop=smart&auto=webp&s=0ad2212a0bdab954a096d753697836fbc7e27196)
Sinn 356 Pilot Chronograph – Black Dial Classic, Pure Tool Watch DNA
A compact and highly versatile tool watch with a classic tri-compax layout and excellent legibility, paired with modern capability.
- Condition: great overall condition with light signs of wear consistent with careful use
- Case size: 38.5mm diameter
- Movement: Valjoux 7750 base, automatic chronograph
- Crystal material: acrylic
![[WTS] Sinn 157 Chronograph Full Set Neo-Vintage Tritium](https://preview.redd.it/qy2eq3ahxzzg1.jpeg?auto=webp&s=fe7f5d3b408fe505567c05c2fc0294a3e43ea873)
Sinn 157 Chronograph Full Set Neo-Vintage Tritium
A 40mm vintage pilot chronograph with a tritium dial, produced between 1993 and 2004.
- Condition: Excellent condition with minimal signs of wear and polish
- Case size: 40mm
- Lug-to-lug: 44.3mm
- Movement type: self-winding automatic
![[WTS] Sinn 903 St II - Black dial - fine link bracelet](https://preview.redd.it/5x4f4g29mrzg1.jpg?width=640&crop=smart&auto=webp&s=f5e6492baf8674d20e47059aabf26392404f2c41)
Sinn 903 St II - Black dial - fine link bracelet
Up for sale is the new version of the Sinn 903 st in excellent condition. Case and bracelet are very clean.
- Condition: Excellent
- Case diameter: 41mm
![[WTS] Sinn 556 I B Sunburst Blue Dial — Cal. ETA2824 Top Grade — Box & Papers — $1,699 Shipped (Tariff Covered)](https://preview.redd.it/u7x2be5qeqzg1.jpg?width=640&crop=smart&auto=webp&s=db77d93dcb68a3a047f0f3fa2cdbc00f31453d79)
Sinn 556 I B Sunburst Blue Dial — Cal. ETA2824 Top Grade — Box & Papers — $1,699 Shipped (Tariff Covered)
A versatile modern German watch with a clean and balanced design, featuring a blue sunburst dial that changes from dark navy to metallic blue depending on lighting.
- Condition: Pre-owned, unpolished with honest signs of wear
- Case size: 38.5mm diameter
- Lug-to-lug length: 45.5mm
- Thickness: 11mm
![[WTS] Sinn 140/142 D1 90s.](https://preview.redd.it/41avkqdshdzg1.jpeg?auto=webp&s=0c3b87242ecd1dcd97a35c7ee78bf5c5036e1d57)
Sinn 140/142 D1 90s.
This is a vintage Sinn 140/142 D1 from the early to mid 1990s. It features a desirable tritium marked dial and lovely patina to the markers and hands.
- Condition: great condition, lovely patina to the markers and hands
- Service history: unknown
- Powers reserve: 5100
- Accuracy per day: 5 seconds