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The Sinn 155 is actually a reissue of a classic and much beloved piece originally produced in the 1960’s for the German Federal Defense Forces (Bundeswehr), under the Leonidas brand name. However, the Leonidas name only appeared on these chronos for a brief period of time, as in the early 1960s, Heuer (now TAG Heuer) acquired the Leonidas company, along with the Bundeswehr chronograph designs. At that time, Heuer also began working with Sinn to provide the watch cases. Together, Heuer and Sinn collaborated on the watch, with the Heuer name appearing on all military issued pieces, and several Sinn branded chronographs released for commercial sale. The Heuer manufacturing licence in Germany did not allow for pieces to be sold commercially, so Sinn worked out an arrangement with Heuer to produce some Sinn branded pieces as well.

Unfortunately, the 155 has already sold out. Sinn is a brand with a brief but storied history, and is known for producing highly accurate and well manufactured timepieces. When a historically significant, limited edition watch is introduced, you can bet its going to sell fast.

Reference number: 155

Case: steel, diameter approx. 43 mm, height approx. 14.5 mm, Plexiglass

Band: Sinn leather band with Sinn pin buckle

Movement: manual wind, hour-minute and small second hand, chronograph

Dial: black

Aesthetic Condition*:
Some marks on the bezel edge, otherwise practically no signs of use on the case. Looks close to new on your wrist. Freshly serviced by Sinn Germany w/ warranty
- We consider this watch, as shown in the pictures, as Near Mint

Manufacturers Box and Papers

In-House Test Results***:
Bench-run for at least 24 hours. All watch functions tested and operable.
Observed rate: performs per manufacturer specs
Bracelet Sizing: up to 8.5 inches

Serial: 15512XXX

Service History: factory service 8/19 w/warranty

*Photos are of the actual watch, are part of the description, and are taken to exceed mid-luxury inspection standards, including Omega and Rolex. Grades are the listing text and pictures summarized into a simple-to-understand score, not to be confused with TZ or other grading systems.
***Instantaneous measurements using a timegrapher averaged over 6 positions. Use only as a baseline. Your wearing habits will affect results. Unserviced watches are not tested for WR or PR. Bracelet size measured using a ruler or mandrel. A comfortable bracelet size may vary from your measured wrist size. No explicit or implied warranties.

Asking Price: $5,199.00

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Quick answers to common questions:
- Is the watch still available? Click the link above to check
- Anything not in the pix included? Unless stated otherwise, NO
- Additional Pictures? NO
- F2F? NO
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Helpful stuff:
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