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Fig. 1

View picture in original size
Fig. 2

Gruen 879 (Rolex 170)

manual wind

4.5 x 11''', Dm= 10.0 x 24.0mm
H= 3.2mm
17 jewels
f = 18000 A/h

Balance staff U1828

Stem W2813

Mainspring / battery
1.21 x 7.0 x 0.0675 x 255mm

0.95 x 0.56mm

Comments about the data

Alpina Gruen Gilde 1929-1937
Breguet hairspring
strange: indirectly driven minute
identical movements: Alpina 879, Gruen 879, Rolex 170
manufacturer: Aegler (Rolex)

Example, year: signature; shock device
ca. 1935: 1930777, 897, Gruen Guild .A., 17 Jewels, Swiss - 9777, Patents

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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