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Fig. 1

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Fig. 2

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Fig. 3

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Fig. 4

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Fig. 5

Girard-Perregaux 21

Features
automatic
sweep second

Data
11.5''', Dm= 25.6mm, Do= 26.0mm
H= 5.5mm
F= 1.0mm
T= 1.5mm
17/39 jewels (39 incl. freewheel rollers)
f = 18000 A/h
power reserve 35h

Balance staff U2393

Stem W2487

Mainspring / battery
1.25 x 9.5 x 0.12 x 270mm

Hands
1.30 x 0.80 x 0.22mm

Comments about the data

Remarks
1957-
base movement modified Peseux 335
automatic with two roller freewheels
jewel-bearing rotor
automatic as module on base movement (Fig.4, 5)

family:
18: manual wind, sub second
19: automatic, sub second
20: manual wind, sweep second
21: automatic, sweep second
22: automatic, date, sweep second
23: manual wind, date, sweep second
suffix 09: ring balance
suffix 19: new rotor lock
Suffix 0, 29: features unknown

Example, year: signature; shock device
ca. 1960: 210107, Girard-Perregaux & Co, Gyromatic, Swiss, 17 Jewels - GP; Incabloc
(Girard-Perregaux 21.0)

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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