Eterna Three-Register 18k Rose Gold Chronograph Silver dial Leather a very technical innovation for

a very technical innovation for the time

allowing watches to become more elegant and lightweight—a “competition” in which AP was a true leader

The case remains strong and in great shape all around

50 x 30 x 23 cm (19

finished with a Rolex plaque pin buckle

Eterna Three-Register 18k Rose Gold Chronograph Silver dial Leather a very technical innovation forFounded in Grenchen, Switzerland, in 1856 by Dr. Josef Girard and Urs Schild, Eterna is one of the true pioneers of Swiss watchmaking. Throughout its long history, the manufacture has been responsible for numerous technical innovations, most notably the introduction of the ball bearing mounted automatic rotor in 1948. This ingenious system, supported by five tiny ball bearings, dramatically improved the efficiency and durability of automatic winding