1980s Sinn model-903 "Navitimer date" 1st-generation in yellow gold filled (unpolished case)

Manufacturer	Sinn
Model	Navitimer Date
Year of Manufacture	1980s
Reference no.	903
Product no.	B-10836
Price

Manufacturer

Sinn

Model

Navitimer Date

Year of Manufacture

1980s

Reference no.

903

Product no.

B-10836

Price

A Sinn Model 903 'Navitimer Date' gold-filled model manufactured in the 1980s, a rare non-polished piece. Following the quartz crisis in the 1970s, the declining Breitling company sold its design rights to the German company Sinn. Sinn still owns these design rights and continues to manufacture and sell navigation chronographs with the same design. At the time, along with the design rights, stock parts were also sold, so the dial, case, and movement were used as-is. Early models have dials and cases signed by Sinn, while the movements are signed by Breitling. This piece is a rare early model in excellent unpolished condition. It is equipped with the Valjoux Cal. 7740. The date can be advanced by moving the hands between 10 PM and 12 AM.

Item details

Serial no.	9,030,***
Caliber	Val-7740
Movement no.	---
Movement type	Manual winding
Material	YGF & Stainless Steel back
Case size	41mm
Case type	Snap back Non-Water-resistant

Dial	Original
Type of Indices	Luminous
Belt	Non Original (between lugs:22mm)
Evaluation case	93％
Evaluation dial	94％
Evaluation mov	95％
Condition	4.5
Rarity	4.5

Other details

Case: Excellent condition with minor scratches and age spots, but non-polished and well-preserved.

Dial: Very clean with no visible scratches or stains, although there are a few age spots.

Movement: The movement is well wound and chrono-functioned, with an accuracy of around 40 seconds per day.