This one blew by me so fast on the 'Bay I didn't get a chance to grab it... Probably the third one I've seen in maybe 5 years. I missed another one a couple years back coming from Italy. This is of course, the Champagne ebauche Pendule style automatic known as the 'Bulova Champ'. We have discussed this watch elsewhere, but here for the benefit of the database is another good example. It is interesting to note that the serial numbers of the two now in the dB are very close. This one is 5258956, the other one is 5258933. The third one I have seen (in person) is also as close in serial. (10 numbers off) . If this watch belongs to a member, my apologies and we humbly ask your permission to keep the entry.
In reply to Wasn't this movement referred by Geoff Baker
The 'Wig-Wag' is a different movt, called the Champagne 19-4. This one (28-20) is called a Pendule because the bumper system uses a pendulum style weight. This is similar to the very first winding systems designed and used in pocket watches of which Breguet is an excellent example. (1780)
This is the 'Wig-Wag':