Thumbnail [WTS] Sinn 556i w/ H-link bracelet w/ full papers 1

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

Hi all, Up for sale is my Sinn 556i that I puchased in 2014 from Watchbuys. I still have the box and all the associated paperwork. This watch has been my only nice watch since I purchased it. It's time to let it go to fund another purchase. Overall, I would say that the condition is great for it's age. There are some microscratches on the sapphire and bracelet but that is to be expected for a watch that was worn and not babied. I tried to highlight the wear in my photos. I hope the new owner will do the same. Unfortunately, I broke the tip off the spring bar tool. I do not think this watch needs any introduction so I won't bother listing the specs. If you know, you know! I know that I am a first time seller so I'm happy to answer all questions via DM and / or video call. Pictures: [https://imgur.com/a/VggUakX](https://imgur.com/a/VggUakX) Price: $950 Payment: Paypal G&S (3% paid by buyer) + Shipping

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Highest:	$1,575	Lowest:	$690
Median:	$1,150.00	Std. Dev:	±$174.11

Estimated Private Party Value $1,025 — $1,275


	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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