Hi,
the Aerotel (mov. and case signed Heuer) is a Valjoux cal.71 the larger and earlier brother of the later vx 72.
The Borel is a 13''' cal. VZHQ, the predecessor of VX72C - can be discerned from the different shape of coulpling clutch lever.
The
Borel movement obviously has the balance cock changed - someone used a
spare part from a different movement. Perhaps the same for the chrono
bridge.
It wouldn't be unusual for this kind of watches if it's
somehow put together from different parts - but this wouldn't put me off
too much.
some things with both watches are very "funny" though.....
-
Aerotel, if I'm not mistaken was a sub brand of Breitling, seeing a
dial like this on a otherwise fully Heuer signed watch is strange.....
-the
"Borel" though, unsigned movement (perhaps cause changed balance cock
and chrono bridge) does have the outside case back ref. number 785 -
which would fit
a Breitling Datora reference which indeed was powered by a VX72C (or earlier VZHQ version).
Vintage watches can be quite interesting
Best regards
Suitbert This message has been edited by SuitbertW on 2015-12-17 09:15:25