The french Parennin caliber 25 is a contemporary ladies’ form watch movement, which uses already 17 jewels due to two cap jewels for anchor- and second wheel. The gold-toned screw balance gives it a very nice optics.
A shock protection was not generally used these days, and so this movement does not have a protection. It also has got no long regulator arm, although there’s a already a scale on the balance cock.
On the dial side, you see the yoke winding system, as on better movements.
The size of this movement is officially given as 5 1/4 lignes, but when you measure it, you get a size of 5,66 lignes. Such a huge difference is pretty rare.
|Number of jewels:||17|
Nickel screw balance|
|Balance bearing / direction hairspring:||Counterclockwise|
|Adjust mechanism:||Hairspring key|
|Winding mechanism:||yoke winding system|
|Setting lever spring:||4 hole(s)|
|Size:||5 1/2 x 8 1/2'''|
Flume: K1 - / 1962 28|