Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 1

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 2

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 3

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 4

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 5

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 6

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 7

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 8

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 9

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 10

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 11

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 12

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 13

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 14

Thumbnail [WTS] Sinn 356 Flieger Day-Date Chronograph Copper 38.5mm $2,600 15

Model:	Sinn 356	Last Scraped:	Jan. 31, 2026, 2:17 a.m.
Username:	Perfect_Worth_6574	Location:	Unknown
Email:	Unknown	Feedback:	No Reviews Found

Hello! Up for sale is my Sinn 356 Flieger Day-Date Chronograph with the striking copper dial. A compact, classic pilot chronograph with excellent legibility and that unmistakable Sinn tool-watch DNA. Wears beautifully at 38.5mm and works equally well as a daily or collection staple. Good overall condition. Bracelet shows light wear. Watch is running great with no issues. Previous owner stated a recent service, though no service documentation is included. Details: - 38.5 mm stainless steel case - 20mm lug width - 45.6mm lug to lug - 15mm thick - Automatic chronograph movement - Day-date display - Screw-down crown - Solid Sinn bracelet with full links Comes with Sinn box and full bracelet links with tool. No papers. Asking $2,600 shipped CONUS No trades. Feel free to reach out with questions or for additional photos. Thanks for looking!

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Highest:	$3,500	Lowest:	$1,199
Median:	$2,500.00	Std. Dev:	±$551.27

Estimated Private Party Value $2,100 — $2,875


	Established:	1961
	Website:	http://www.sinn.de/de/
	Country of Origin:	Germany

Sinn Spezialuhren GmbH is a manufacturer of mechanical wristwatches based in Frankfurt am Main. The company was founded in 1961 by flight instructor and pilot Helmut Sinn under the name ‘Helmut Sinn Spezialuhren’.

Following its foundation in 1961, the company focused on the manufacture of navigation cockpit clocks and pilot chronographs and sold these through direct selling, bypassing retailers. The clocks and watches were produced according to pilot Helmut Sinn’s specifications in the private label sector in Switzerland. By eliminating the trade margin of the retailers, the company was able to offer its clocks and watches at a lower price than through traditional sales channels.

In 1994, Helmut Sinn sold the company to Lothar Schmidt. Following the sale, he acquired Swiss watchmaker Guinand in 1996. In 1998, he set up a new company in Frankfurt am Main. With this company, he offered brand watches from Jubilar, Chronosport and the newly acquired Guinand. In 2006, he retired from business activity. Since handing over the management of the business to his long-standing employee Horst Hassler, he now acts as an advisor to the company. On September 3rd 2016 Helmut Sinn celebrated his 100th birthday.

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