EB 1225

EB 1225 | 17jewels.info - The Movement Archive

EB 1225


The caliber 1225 of Ebauches Bettlach is a highly unique constructed and tiny ladies' watch movement. As usual with EB, it uses a pin lever escapement, but here, the anchor contains a little counter-weight (of which you can see the connection point down on 5 o’clock). The anchor wheel is beared in a cap jewel on the movement side.

A true speciality of that movement is the position of the balance cock: Instead of being located next to the top plate, it sits right on top of it and even contains a hole for the second wheel. Such a space-saving construction is hard to find anywhere else. And besides that, there’s another speciality: The three-leg ring balance is on top thinner as on it bottom side. Why that? No idea, sorry.

On the dial side, you see the yoke winding mechanism. Both hands are driven indirectly by the mainspring barrel wheel - a construction which originates by Roskopf watches and is often found on pin-lever movements.

EB 1225: EB 1225 dial side

EB 1225 dial side

Technical data

Size:5 3/4 x 8 3/4'''
lift angle:52°
Number of jewels:15
Escapement:Pin lever
Balance types: Nickel anular balance
Shock protection(s): none
Balance bearing / direction hairspring:Clockwise
Moveable stud:no
Adjust mechanism:Long regulator arm
  • lever
  • escape wheel, seconds wheel, third wheel, large driving wheel, mainspring barrel
Winding mechanism:yoke winding system
Setting lever spring:1 hole(s)
References: Flume: 1952 38

Usage gallery

EB 1225: Mustang ladies' watch

Mustang ladies' watch