Probably in the late 1950ies, Kasper released their gents’ watch movement series with 10 1/2 lignes diameter, to which belonged besides the caliber 900 also the simpler constructed caliber 750, all with the same gear train.
The base place shows, that all important bearings, including that of the minute wheel are equipped with rubies. It also reveals, that the Kasper 750 is cost efficient pillar construction, which tries to hide that with the clever use of metal bridges, so that it looks massive.
When the large minute wheel bridge is mounted (put on), you see the pillar construction.
The Kasper 750 has got the usual gear train of the 1950ies: Mainspring barrel - center minute wheel - third wheel - fourth wheel - escapement wheel.
On the side view, you can see the pillar construction. It was much cheaper to produce, since less metal had to be shaved out in contrast to a massive movement.
The Kasper 750 is regulared by a screw balance, which is beared in two Monorex shock protections. It beats with the usual slow 18000 A/h and controls a classical pallet lever movement of swiss type.
Unlike the Kasper 900, the Kasper 750 has got its ratchet on the dial side, which is consits like on very cheap movements only of a simple spring.
A true speciality is the rocking bar winding system:
It does not consists of the typical rocking bar, below which three gears are located, but the two outer gears are shifted into their position with a tiny linkage, a significant increase in complexity compared with a standard rocking bar winding system.
|Number of jewels:||17|
Nickel screw balance|
|Balance bearing / direction hairspring:||Clockwise|
|Adjust mechanism:||Long regulator arm|
|Construction type:||pillar construction|
|Winding mechanism:||rocking bar winding system|
|Setting lever spring:||3 hole(s)|
Flume: 1957 36|