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View picture in original size
Fig. 1

View picture in original size
Fig. 2

FEF 6600

manual wind

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
17/21 jewels
f = 18000 A/h
power reserve 45h

Balance staff U2478 / U3124
balance with/without screws

Stem W3347

Mainspring / battery
Zf1181, 1.50 x 6.0 x 0.065 x 195mm

1.00 x 0.55mm

Comments about the data


short plate edges straight:
6600: 18000 A/h, setting-lever screw
6620: 21600 A/h, setting-lever screw
6630: 21600 A/h, setting-lever button
6632: 21600 A/h, redesigned click
6700: 28800 A/h, setting-lever button
6710: 21600 A/h, second, setting-lever button
6720: 28800 A/h, second, setting-lever button
short plate edges round:
6621: 21600 A/h, setting-lever screw
6631: 21600 A/h, setting-lever button
6633: 21600 A/h, redesigned click
6701: 28800 A/h, setting-lever button
6711: 21600 A/h, second, setting-lever button
6721: 28800 A/h, second, setting-lever button

Example, year: signature; shock device
ca. 1955: Swiss, 21 Jewels - NP; Incabloc

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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