Rar! Railway CHRONOMETRE Pocket watch Men’s no repeater fusee duplex chronometer
Case: In age-related condition with signs of wear. DM: approx.
Case: In age-related condition with signs of wear. DM: approx.
4x Solid Silver. DM: approx. 29 – 32mm. For parts or repair.
Case: Niello Silver. In good age-related condition with signs of wear. In age-related condition.
/Case: In age-related condition with signs of wear.
Case: In age-related condition with signs of wear.
In 1782, Thomas Tyrer obtained a patent for it in London. A slot in the roller on the lower part of the balance staff allows a pointed tooth of the escape wheel to pass and rotate to the next position, where it is locked.
Case: In age-related condition with signs of wear.
Case: Solid Silver. In age-related condition with signs of wear.