Instrument Watches
556 F-4 / Japan
Ref. 556.F-4.II
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
556 F-4 / Japan
Ref. 556.F-4
Instrument Chronographs
Chronograph 144 St Diapal
Ref. 144.068
Instrument Chronographs
Chronograph 144 St Sa
Ref. 144.066
Instrument Chronographs
Chronograph 356 Pilot
Ref. 356.020
Instrument Chronographs
Chronograph 356 Sa GR
Ref. 356.077
Instrument Chronographs
Chronograph 356 Sa Pilot
Ref. 356.070
Instrument Chronographs
Chronograph 356 Sa Pilot II
Ref. 356.072
Instrument Chronographs
Chronograph 356 Sa Pilot III
Ref. 356.0721
Instrument Chronographs
Chronograph 358 Diapal
Ref. 358.061
Instrument Chronographs
Chronograph 358 Sa PILOT
Ref. 358.060
Diving Watches
Chronograph U1000 EZM 6
Ref. 1011.010
Diving Watches
Chronograph U1000 S EZM 6
Ref. 1011.020
Diving Watches
Chronograph U1000 SDR EZM 6
Ref. 1011.030
Diving Watches
Chronograph U1000.S Mother Earth
Ref. 1011.1719
Classic Timepieces
Classic Timepieces 1736 Classic
Ref. 1736.010
Classic Timepieces
Classic Timepieces 1736 St I 4N
Ref. 1736.011
Classic Timepieces
Classic Timepieces 1746 Classic
Ref. 1746.011
Classic Timepieces
Classic Timepieces 6110 Rose Gold S
Ref. 6110.020
Classic Timepieces
Classic Timepieces 6200 Meisterbund I
Ref. 6200.010
Classic Timepieces
Classic Timepieces 6200 WG Meisterbund I
Ref. 6200.020
Classic Timepieces
Classic Timepieces Modell 2300
Ref. 2300.010
Classic Timepieces
Classic Timepieces Regulateur Rose Gold / Silver
Ref. 6100.021
Classic Timepieces
Classic Timepieces Regulateur Stainless Steel / Silver
Ref. 6100.011
Current Listings
![[WTS] Sinn 556 A RS Full Kit (2025)](https://preview.redd.it/x3l92qdxj98g1.jpg?width=640&crop=smart&auto=webp&s=f4618b74b9f9d3931d87ee3e0af6aed29dec8c51)
Sinn 556 A RS Full Kit (2025)
This 2025 Sinn 556 A RS is a beautiful watch that comes with various accessories, including a standard length leather strap and the H bracelet.
- Condition: 9/10
- Strap type: leather
- Bracelet size: H
- Box and papers included: yes
![[WTS] Sinn EZM 10 - 950.1182](https://preview.redd.it/si6gbz1zw28g1.jpg?width=640&crop=smart&auto=webp&s=cea25ab5755d077b9cd5f35420d0665c65bb8df8)
Sinn EZM 10 - 950.1182
The Sinn EZM 10 features a 45mm case and an in-house modified Valjoux 7750 movement, accompanied by both a tegimented titanium bracelet and original leather strap.
- Condition: Gently used with some wear on the titanium bracelet
- Bracelet type: Tegimented titanium and leather
- Size: 45mm diameter
- Movement: In-house modified Valjoux 7750
![[WTS] NEW SINN 903 ST II - DEC 2025](https://preview.redd.it/p3ldty4sz08g1.jpg?width=640&crop=smart&auto=webp&s=d582df904b35d5899559c2c0a3007e3a7ead5e49)
NEW SINN 903 ST II - DEC 2025
Up for sale is the latest Sinn 903 St, dated December 2025, which features a brand new high-quality white aftermarket strap that complements its iconic navigation chronograph dial.
- Condition: Brand New / Unworn
- Status: New in box
- Box Contents: Box, papers, warranty card
![[WTS] Sinn 556. Box, Tools.](https://preview.redd.it/mrsqcxgekm7g1.jpeg?auto=webp&s=66e950c43527675a1c7d5c11d7bdf690816fcc55)
Sinn 556. Box, Tools.
Hello All - I am putting for sale a Sinn 556 with box and tools.
- Shipping method: Fedex with insurance
- Shipping locations: Worldwide
![[WTS] Sinn 103 Classic 12 LE out of 600 made](https://preview.redd.it/rg4ufhts8i7g1.jpg?width=640&crop=smart&auto=webp&s=739467614a8efb07d4c75b0d230d0c7733d681c5)
Sinn 103 Classic 12 LE out of 600 made
This is a limited edition of 600 Sinn 103 Classic 12 watches, considered one of the most beautiful Sinns made.
- Condition: mint
- Limited edition quantity: 600
![[WTS] Sinn 144 St Sa PRICE DROP $1675](https://preview.redd.it/9o7nb4poef7g1.jpg?width=640&crop=smart&auto=webp&s=ef5dbb514fd31b3ce59c3cfa2c9e1a6152d3bf07)
Sinn 144 St Sa PRICE DROP $1675
This Sinn 144 St Sa is a nearly new classic watch that has been worn only a couple of times since its purchase in April 2019. It comes with its original box and papers.
- Condition: Excellent, basically unused with one small polish mark on the clasp
- Year Bought: 2019
- Box And Papers: Included
![[WTS] Sinn 857](https://preview.redd.it/7ab6dkn29e7g1.jpeg?auto=webp&s=3e1df18a4af135a4ce669bb57494f3cc55c229a3)
Sinn 857
Selling a Sinn 857 DLC that was only worn once and is in great shape with no visible marks. It comes with the inner/outer box, extra links, and the tool.
- Condition: Excellent
![[WTS] Sinn U50 - Mother of Pearl](https://preview.redd.it/ftnssfuu177g1.jpg?width=640&crop=smart&auto=webp&s=3953925dad3be9d6c480f4bc9630e7ae796d4639)
Sinn U50 - Mother of Pearl
This listing is for a Sinn U50 Mother of Pearl diver's watch, featuring Sinn's tegimenting technology and a range of included accessories.
- Condition: Pre-owned with minimal wear
- Depth rating: 200m
- Water resistance: water resistant
- Warranty: includes warranty card
![[WTS] Sinn T1B on bracelet & rubber strap | fantastic condition | keeps great time | rare | asking $4250](https://preview.redd.it/ho2a4z39177g1.jpg?width=640&crop=smart&auto=webp&s=22b3b351cc2060090b04e4cb7f3c4a3b0aa53d18)
Sinn T1B on bracelet & rubber strap | fantastic condition | keeps great time | rare | asking $4250
A Sinn T1B watch with a like new bracelet, rubber strap, and clasp, in excellent shape, suitable for everyday wear.
- Condition: Fantastic condition, like new
- Bracelet: On bracelet and rubber strap with clasp
- Wrist size: 8-1/4 inches
- Shipping cost (conus): $25