Windy,

The double flint looks to be a very fancy but not especially high quality Belgian gun from about 1800. To see the stuff that old Bony was using, take a look at the James D. Julia catalog for session 2 March 16, 2010 where a few Boutets are pictured. [jdjuliaauctions.com, firearms division, past auctions].

The Kuchenreuters look to be of excellent quality and condition from what I can see in the photos. Any better close-ups available?

All the best, Mal