Anyway, I am quite curious as to the origins of this watch, and looking forward to investigating how it came to be in his possession.
Thank you in advance for any information you may have.
The work of Vacheron copyists from the pre-1880's always amazes for the sheer volume and effort dedicated to Vacheron & Constantin above other brands. Perhaps the nature of watch manufacturing at the time, mostly cottage work, allowed the enterprising piece-worker to take extra stock and knock off a few fakes to increase profits. While Constantin often wrote about the problem, it appears he was unable to do much about it (still a problem in modern times to be sure).
I believe this is an authentic Vacheron Constantin dated around 1815.A very interisting watch, an unsigned movement was not uncommon at all at the time infact i came across many watches with unsigned movements that were authenticated by the vc main office in Geneva, there should however be a serial number underneath the dial.Different trademarks were used at that time for different markets.Most of the watches bearing the name just vacheron or vacheron freres are indeed fake,however i dont believe this is the case for this one.i think this is one of the ealiest examples of vacheron cylinder movements that ive seen, could be quite expensive in the right sale with a proper identification by the VC main office.