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Fig. 1

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Fig. 2

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Fig. 3

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Fig. 4

Girard-Perregaux 42.4

Features
automatic
sweep second
date: set by changing 20:40-24h
hack feature

Data
11.5''', Dm= 25.6mm, Do= 26.0mm
H= 5.3mm
F= 1.4mm
T= 2.0mm
17/39 jewels (39 incl. freewheel rollers)
f = 36000 A/h
power reserve 40h

Balance staff U3371

Stem W3304

Mainspring / battery
1.10 x 10.0 x 0.11mm

Hands
1.50 x 0.90 x 0.21mm

Comments about the data

Remarks
ball-bearing rotor
automatic with two roller freewheels
worm screw regulation gear
The family is based on the manual wind calibre AS 1687/1688.
The automatic mechanism is a joint development of Doxa, Eberhard, Favre-Leuba, Girard-Perregaux, and Zodiac.
differences not known between 42.0, 42.1, 42.4

family/generations:
first generations
30: manual wind
21: automatic
22: automatic, date
33: manual wind, date
suffix A, .5, .7: 36000A/h
escapement and setting mechanism redesigned, hack feature
40: manual wind
41: automatic
42: automatic, date
43: manual wind, date
suffix .1, .4: 36000A/h

Example, year: signature; shock device
ca. 1970: 40117 (Chronometer), 36000 A/h, 421799, Girard-Perregaux, Gyromatic, Swiss, 39 Jewels; Incabloc
(Girard-Perregaux 42.1)

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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