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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Girard-Perregaux 504 (FEF 6631)

Features
manual wind

Data
5.75 x 6.75''', Dm= 13.05 x 15.15mm
Do= 13.05 x 15.55mm
H= 3.5mm
F= 0.6mm
T= 1.7mm
17 jewels
f = 21600 A/h
power reserve 53h

Balance staff U3531

Stem W3393

Mainspring / battery
Zf1181, 1.50 x 6.0 x 0.065 x 195mm
(original spring longer than mentioned here)

Hands
1.00 x 0.55mm

Comments about the data

Remarks
above for the FEF 6631 mentioned mainspring is fitting, but original spring a bit longer

Example, year: signature; shock device
ca. 1980: 504-424, Girard-Perregaux, Swiss, 17 Jewels; Kif-Ultraflex

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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