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View picture in original size
Fig. 1

View picture in original size
Fig. 2

HPP 422

Features
manual wind
sweep second

Data
11.5''', Dm= 25.6mm
H= 4.5mm
F= 1.3mm
T= 2.3mm
17/21 jewels
f = 18000 A/h
power-reserve 37h

Balance staff U2247

Stem W2577

Mainspring / battery
1.30 x 9.0 x 0.11mm

Hands
1.45 x 0.80 x 0.21mm

Comments about the data

Remarks

family/generations:
HPP-Hercules (HPP-Supershock):
420: 12.75''', automatic
421: 12.75''', automatic, date
422: 11.5''', manual wind
423: 11.5''', manual wind, small date
4231: 12.75''', manual wind, date
424: 10.5''', manual wind
425: 10.5''', manual wind, small date
Incabloc:
431: 12.75''', automatic, date
433: 11.5''', manual wind, small date

Example, year: signature; shock device
1) 1962: old data sheet
2) ca. 1965: HPP 4231, 21 Jewels; HPP-Hercules (HPP-Supershock)
(HPP 4231, 12.75''')

Not for Sale!
The movements presented in this caliber finder are not for sale. This is only a data sheet for identification and evaluation of the movement calibre, as well as for approximate dating.

bidfun-db 21.3 © 02-08-15, mtr-Ranfft


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