Went by the Griffin & Howe store in Greenwich CT last Saturday and was impressed by a pair of Westley detachable lock Faunetas made for some Maharaja. Very beatiful guns, bit of gold inlay, straight grip, express sight parade, etc. Did not venture to ask the price.
I wasn't listening too closely to the sales guy - I was blinded by the looks of those two guns - and my hearing aids are pesky but I think he may have said there were sets of ordinary shot barrels with them too. IMO if you are within an hour's drive of Greenwich it is worth taking a look.