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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

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Fig. 6

AS 1977-2 (=Durowe 1977-2)

Features
manual wind

Data
5.75 x 6.75''', Dm= 13.05 x 15.2mm
Do= 13.05 x 15.6mm
H= 3.5mm
F= 0.6mm
T= 1.7mm
17/21 jewels
f = 21600 A/h
power reserve 44h

Balance staff U2936

Stem W2641

Mainspring / battery
1.50 x 6.0 x 0.065mm

Hands
1.00 x 0.55mm

Comments about the data

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

family/generations:
18000 A/h:
1012: -
1582: minor modifications
21600 A/h:
1677, 1719: -
1777: short plate edges round
1977: stronger mainspring, regulator new
1977-2: balance and barrel new
1977-2, 1978-2: winding gear new
1977-4: balance cock and regulator new
1977-5: 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
5-6) ca. 1975: AS 1977-2, BP, Gruen Watch Co, 248. Swiss, 21 Jewels; Kif-Protechoc

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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