Model:	Sinn 556i	Last Scraped:	March 8, 2025, 4:16 a.m.
Username:	Herby81	Location:	Unknown
Email:	Unknown	Feedback:	7 Reviews (100% )

Up for sale is my Sinn 556i RS. Great condition with minor desk dive type wear. Originally purchased from WatchBuys in 2022. $1200 shipped CONUS via PayPal f&f. Full kit. Currently sized for my ~7.25” wrist and there are 2 extra links. I have lots of transactions here and elsewhere with nothing but positive feedback. Prefer to deal with buyers who also have multiple transactions. A trade I would consider is your Bulova Lunar Pilot (43mm, black, full kit) plus cash. Thanks for looking!

Reputation and Feedback

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Great transaction with Herby81

Great communication, paid promptly, and fast to respond to messages. Thanks Herby81! -Nathan
By Nathan356 Dec. 1, 2019, 3:30 a.m. on WatchUSeek
Thanks Herby81. Great Seller.

Had a great transaction with Herby81. I didn't have much feedback on this particular forum but after some prompt communication back and forth he was willing to accept the payment through Paypal GS, even though the watch was fairly expensive.
By Hilldon Nov. 25, 2019, 4:16 p.m. on WatchUSeek
Herby81 is a great seller!

He answered my questions quickly, shipped the watch out quickly, and I got exactly what he advertised. Great seller; would definitely recommend and buy from again!
By stimko68 Oct. 14, 2019, 5:35 p.m. on WatchUSeek
Great Deal with Herby81

Excellent transaction with Herby81; communication, shipping, price and watch all first rate. Highly recommended
By lawtaxi Sept. 24, 2019, 12:35 a.m. on WatchUSeek
Great purchase from Herby81

Just picked up an awesome Lorier Neptune V2 from Herb81 -- don't hesitate to buy from him! Awesome transaction all around - great communication, fast shipping, and a well packed watch. A+
By tylervanwormer Sept. 16, 2019, 12:03 p.m. on WatchUSeek

Highest:	$1,500	Lowest:	$690
Median:	$1,100.00	Std. Dev:	±$164.20

Estimated Private Party Value $1,000 — $1,250


	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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