The Pforzheim based manufactury Henzi & Pfaff produced till the 1960ies rather small amounts of watches under their brand name “Hercules” and movements. One of the rare specimen of those movement is the mid-size ladies’ caliber 210, which has got 21 jewels, even described in script typeface.
The construction of the HPP 210 is contemporary with directly driven center second hand and minute.
This movement offers an oddity: A lateral lever, probably used due to the reduced free space of this movement. On this type of lever, the pallets are not at the ends, like on a fork, but on the same side of the lever, while the other side is empty:
The lever is driven by a screw free balance (probably Glucydur), which beats slowly with only 18000 A/h.
As you can see, the shock protection system of the HPP is insert directly into the main plate. So, there’s just a very small hole for the balance wheel.
Note the unusual shape of the setting lever!
Even on the dial side, there are two cap jewels. More is not possible!
In the lab
Timegrapher resultHorizontally the rates are acceptable for a >50 year old watch, but the vertical rates are terrible!
|dial up||-120 s/d|
|dial down||+75 s/d|
|crown right (12 up)||-300 s/d|
|crown up (3 up)||- s/d|
|crown left (6 up)||- s/d|
|crown down (9 up)||- s/d|
|Number of jewels:||21|
Glucydur anular balance|
Hercules (Henzi & Pfaff)|
|Balance bearing / direction hairspring:||Clockwise|
|Adjust mechanism:||Hairspring key|
|Construction type:||solid construction|
|Winding mechanism:||yoke winding system|
|Setting lever spring:||2 hole(s)|
|Functions:||hour, minute, second|
Flume: 1957 30|