HPP 6031
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| HPP 6031 |
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Description
In the 1940ies and 50ies, Henzi & Pfaff of Pforzheim, Germany produced a number of rather
cheap watches. The caliber 6031 is among the last ones of them. It is a simple pier movement with
a swiss pallet anchor lever (which was advertised on the dial to remind of a "Swiss" watch).
The HPP 6031 uses a simple ring balance, which is beared in two inhouse "Supershock HPP" shock
protections. Nevertheless, even these protections cannot help against very hard shocks, and such
a shock broke the balance axle on the watch shown here.
The movement drives the hands indirectly by the mainspring, while the minute wheel is located
decentrally and the center second hand is driven indirectly. Many gears run in cap jewels, which
allowes the marketing-relevant statement of "21 Jewels" on the dial.
The date is centered by a simple, but effective mechanism and switches slowly. It cannot be
corrected in a faster way.
On the dial side, there's a yoke winding mechanism - a feature, which is normally found in better
watches only.

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| dial side view |
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| dial side view, without date mechanism |
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Technical data
| Manufacturer | HPP |
| Caliber | 6031 |
| Number of jewels | 21 |
| Escapement | Anchor with pallets |
| Balance | Nickel |
| Shock protection(s) | Hercules (Henzi & Pfaff) |
| Balance cock direction | counterclockwise |
| Hairspring stud | fixed |
| Regulator type | Hairspring key |
| Movement construction | Fork Escapement wheel, Fourth wheel, Third wheel, Mainspring barrel Center second pinion |
| Construction type | pillar construction |
| Bridge shape | full plate including esc.wheel, 3 gears |
| Winding mechanism | yoke |
| Setting lever spring | 0 holes |
| Features | SCI,QG |
| Functions | Hour, minute, second, day |
| Beats per hour | 18000 |
| Size | 101/2''' |
| Image in Flume Werksucher | 1958 34 |
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| Factsheet |
Usage gallery