A rather early movement, whose gear train and gear positioning clearly identifies it as predecessor of so famous movements like the Peseux 320, is the Peseux 170, a 16 jewel pallet lever movement in the standard size of 10 1/2 lignes diameter.
The base plate shows, that all important bearings of this movement contain rubies. The minute wheel bearing contains a ruby only on the movement side, where it can easily be seen.
The Peseux 170 uses the conventional gear train with directly driven center minute wheel, third wheel, seconds wheel at 6 o’clock (where here doesn’t carry a decentral second hand) and finally the escape wheel.
A feast for the eyes is the golden Glucydur screw balance, which not only runs in two Incabloc shock protections (which was not self-evident in the 1940s!), but can also be adjusted with a long regulator arm to achive the precise beating rate of 18000 A/h.
As escapement, a swiss pallet lever escapement is used.
The dial side has got an interesting finishing.
Besides that, you can easily spot the Incabloc shock protection and the large setting lever spring of the yoke keyless works.
In the lab
It came without case into the lab and got a simple service.
Timegrapher resultThe more than 70 years old movement, which ran too slow at the beginning, was adjusted and can now show, to what it was capable in terms of precision.
|dial up||-10 s/d||293°||0.4ms|
|dial down||+-0 s/d||281°||0.5ms|
|crown right (12 up)||-8 s/d||243°||0.8ms|
|crown up (3 up)||-5 s/d||252°||0.4ms|
|crown left (6 up)||-16 s/d||257°||0.1ms|
|crown down (9 up)||-7 s/d||241°||0.6ms|
|Size:||10 1/2''' (measured: 23.3mm)|
|Number of jewels:||16|
Glucydur screw balance (two legs)|
|Balance bearing / direction hairspring:||Clockwise|
|Adjust mechanism:||Long regulator arm|
|Construction type:||solid construction|
|Winding mechanism:||yoke winding system|
|Setting lever spring:||5 hole(s)|
Ebauches: 1949 I 45|
Flume: 1947 34