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View picture in original size
Fig. 1

View picture in original size
Fig. 2

View picture in original size
Fig. 3

Buren 1000A

Features
automatic
sweep second

Data
12.5''', Dm= 28.15mm, Do= 28.5mm
H= 4.2mm
F= 1.5mm
T= 1.9mm
17/21/25/33 jewels
f = 18000 A/h
power reserve 42h

Balance staff U2490

Stem W2403

Mainspring / battery
1.00 x 9.5 x 0.095mm

Hands
1.50 x 0.90 x 0.22mm

Comments about the data

Remarks
1957-1962
first movement family with micro rotor
selfwinding gear with direction switching by a pinion floating between two huge jewels (Fig.3)
in 17-jewels variants one of these jewels substituted by polished steel disc

family/generations:
1000: without second
1000A: second with friction spring
1001: without second, date
1001A: second with friction spring, date
1005: second with double third wheel
1006: second with double third wheel, date

Example, year: signature; shock device
ca. 1960: HYL, BAA, 1000A, Hamilton Watch Co., 663, Swiss, 17 Jewels; Incabloc
(Hamilton 663, Buren 1000A)

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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