Girard-Perregaux, La Chaux-de-Fonds, "Gyromatic 39 Jewels", Movement No. 3109682, 34 mm, circa 1965

A gentleman's classical and very rare automatic observatory chronometer with centre seconds
Case: 18k gold, screw back. Dial: silvered. Movm.: rotorwind movement, Glucydur balance.

This marvellous vintage wristwatch by Girard-Perregaux in a 18k gold case is exceptionally attractive; the watch is fitted with an inhouse automatic chronometer movement.
The slightly curved lugs are an eyecatcher – one would have expected the straight lugs that were typical for the 1950s and 1960.