Eterna Matic watch AirForce watch chronograph ETA 7750 wristwatch ref. 8418.41 Thenith military The width of the eyelet

The width of the eyelet is 24

and in 1924

The manufacture has a prominent role within the international watchmaking landscape thanks to its high-quality mechanical timepieces manufactured in-house

just 29mm in diameter

but is held in place by stops or bumpers (3) against a stop (4)

Eterna Matic watch AirForce watch chronograph ETA 7750 wristwatch ref. 8418.41 Thenith military The width of the eyeletEterna watch Air Force watch chronograph 7750 wristwatch Pilot Simple and reliable Eterna Pilot with the Valjoux ETA7750 mechanism. In excellent running order, all functions work. Serviced in 2024. During service, the large second hand with a huge white triangle at the end was replaced with a thin red one, calmer, like on model 3. The original hand did not give me peace. Apparently, the Eterna designers came to the same conclusion, replacing it with a