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Fig. 1

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Fig. 2

Alpina 273 new (Unitas 231)

stem wind and set
sub second

18.5''', Dm= 41.0mm, Do= 41.65mm
H= 5.3mm
F= 0.6mm
T= 2.3mm
15 jewels
f = 18000 A/h
power reserve 41h

Balance staff U1087 / U1161
hairspring collet 0.9/0.8mm

Stem W1491

Mainspring / battery
Zf3583, 2.10 x 17.0 x 0.21 x 490mm

2.00 x 1.15 / 0.27mm

Comments about the data

open face calibre
brand: Novice
attention: left handed ratchet-wheel screw

273, 6525: open face, H= 5.3mm
273, 274: hunter, H= 5.3mm
277, 6521: open face, H= 4.15mm
277, 278: hunter, H= 4.15mm
suffix A: meaning not known

Example, year: signature; shock device
ca. 1940: 273 - UT (Unitas)

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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