Otero 437

Otero 437 | 17jewels.info - The Movement Archive

Otero 437


On the way, the Otero 437 presents itself, you can clearly see the dark clouds of the forthcoming quartz age. Instead of allowing open views into the movement, it is almost hermetically sealed into a container, which protects it from dust and misusage.

Otero 437: Container


This tiny form movement is pretty impressive, since it even has got an indirect driven center second hand. The ring balance is secured by a Rufa-Anti-Shock protection and has got a moveable hairspring stud.

On the dial side, there’s a yoke winding mechanism. The setting lever is already secured by a spring, so for releasing the crown you have to press a button, which is reachable by the only hole of the container.

Otero 437: Otero 437 dial side

Otero 437 dial side

Technical data

Size:6 3/4 x 8'''
Number of jewels:21
Escapement:Pallet lever
Balance types: Nickel anular balance
Shock protection(s): Rufa-Anti-Shock
Balance bearing / direction hairspring:Clockwise
Moveable stud:yes
Adjust mechanism:Hairspring key
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel
  • center second pinion
  • mainspring barrel
Winding mechanism:yoke winding system
Setting lever spring:4 hole(s)
  • SCI (indirect center seconds)
Mentioning in literature (years): 1977

Usage gallery

Otero 437: Pallas Eppo ladies' watch

Pallas Eppo ladies' watch