In the 1950ies, there were still made many true pallet lever movements in France. With directly driven center second, screw balance and missing shock protection it was still quite state of the art, but not overly modern.Video on YouTube
In the early fifties, when this movement was launched in Annemasse/France, movement with a two-storey construction were en vogue: The directly driven minute wheel was beared under an own bridge, while on top of it, the third wheel and the directly driven fourth wheel were located:
The meaning of the code “407” is unknown, but it cannot stand for monthy and year, since in the Flume Werksucher before 1950 this movement was not listed.
This construction is a pleasure for a watchmaker, since there are never more than three gears at the same time under one bridge.
The two-leg schrew balance which beats slowly with 18000 A/h is not yet shock protected.
The minute wheel is only beared on its top side (on the minute wheel bridge), on its lower side, on the base plate, there’s no bearing ruby, but both bearings of the escapement wheel are covered with cap jewels.
On the dial side, you see the cap jewels of the balance and the escapement wheel (without shock protections) as well as the yoke winding system.
On the specimen shown here, the setting lever spring is broken, a common problem on old movements.
|Number of jewels:||17|
Nickel screw balance|
|Balance bearing / direction hairspring:||Clockwise|
|Adjust mechanism:||Long regulator arm|
|Construction type:||solid construction|
|Winding mechanism:||yoke winding system|
|Setting lever spring:||2 hole(s)|
|Functions:||hour, minute, second|