Thumbnail [WTS] Sinn 556I RS on H-Link Bracelet 1

Model:	Sinn 556i	Last Scraped:	May 22, 2025, 12:47 a.m.
Username:	JPantera	Location:	Unknown
Email:	Unknown	Feedback:	No Reviews Found

**For sale:** Sinn 556i RS Up for grabs is my Sinn 556i RS in great condition, showing only light wear from regular desk use. It’s been worn in rotation, mostly in office environments. Originally purchased from WatchBuys in 2024. I've included a photo of the silver rotor and the original purchase card. [Timestamp & condition](https://imgur.com/a/dzjnz8C) **Price:** $1,250 via PayPal Friends & Family — includes expedited, insured shipping within the CONUS. The set is mostly complete, with the only missing item being the strap-changing tool. The watch is currently sized for a \~6.5" wrist (not too snug), and extra links are included. Plenty of positive feedback from transactions here and on other platforms — buy with confidence! Thanks for looking!

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Highest:	$1,575	Lowest:	$690
Median:	$1,194.50	Std. Dev:	±$174.20

Estimated Private Party Value $1,044 — $1,264


	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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