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Fig. 1

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Fig. 2

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Fig. 3

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Fig. 4

Durowe 1977-2 (INT, =AS 1977-2)

manual wind

5.75 x 6.75''', Dm= 13.0 x 15.2mm
Do= 13.0 x 15.6mm
H= 3.5mm
F= 0.6mm
T= 1.7mm
17 jewels
f = 21600 A/h
power reserve 44h

Balance staff U2936

Stem W2641

Mainspring / battery
1.50 x 6.0 x 0.065mm

1.00 x 0.55mm

Comments about the data

1972-1978 (1977-2, 1977-4)
For late samples already the balance cock of the 1977-4 was applied (Fig.3, 4).

1977: -
1977-2: balance and barrel new
1977-2, 1978-2: winding gear new
1977-4: balance cock and regulator new
1980: click simplified

Example, year: signature; shock device
1-2) ca. 1975: AS 1977-2, INT, 17 Jewels; Incabloc
3-4) ca. 1975: AS 1977-2 INT, 17 Jewels; Ruby-Neutro-Shock

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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