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View picture in original size
Fig. 1

View picture in original size
Fig. 2

Brac 184

Features
manual wind
sub second

Data
13.5''', Dm= 30.8mm, Do= 31.2mm
H= 4.8mm
(lever cock +0.5mm)
F= 0.5mm
T= 2.4mm
15 jewels
f = 17280 A/h
power-reserve 30h

Balance staff U2241 / U2132
pulse pin/finger

Stem W2320

Mainspring / battery
1.40 x 13.5 x 0.14mm

Hands
1.90 x 1.10 x 0.24mm

Comments about the data

Remarks
pin-lever escapement
indirect minute, hand friction clutch on barrel (Roskopf type)
ingenious: one simple part replaces setting-lever spring, yoke, and yoke spring
early samples also with pointed staff

family:
170: 12''', sweep second, date
171: 12''', sub second, date
172: 12''', no second, date
173: 13.5''', sweep second, date
174: 13.5''', sub second, date
175: 13.5''', no second, date
180: 12''', sweep second
181: 12''', sub second
182: 12''', no second
183: 13.5''', sweep second
184: 13.5''', sub second
185: 13.5''', no second

Example, year: signature; shock device
ca. 1960: Swiss, 15 Rubis - Brac 180
(Brac 180, 12''', sweep second)

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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