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Fig. 1

Venus 178

manual-wind chronograph, 60s, 15/30min, 12h, pillar wheel
sub second

14''', Dm= 31.0mm
17 jewels
f = 18000 A/h
power reserve 45h

Balance staff U1455 / U3106
balance with/without screws

Stem W1188 / W3371
thread 1.2mm / 0.9mm

Mainspring / battery
Zf1337, 1.60 x 12.5 x 0.13 x 430mm

1.40 x 0.95 x 0.27 / 0.27 x 0.27 x 0.18mm

Comments about the data

Breguet hairspring
15min register especially for Breitling models Avi and Copilot

175: base plate with bevelled edge
176: base plate plain
178: hour counter
179: split second
183: date, hour
184: date, moon phase, hour
185: split second, hour
189: split second, date, hour
190: split second, date, moon phase, hour
192: calendar, hour
193: split second, calendar, hour
194: calendar
198: calendar, moon phase
205: split second, calendar, moon phase
often the enhanced versions are signed like the base movement

Example, year: signature; shock device
ca. 1950: Breitling; Incabloc (15min)

© S. Walter

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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