I would cast a vote for 1810 and later and also being a generic type and could be used most anywhere as the lines do not lock it into any school, there are lilkey more of this "style" around today than the more corect representations, only in the last few years has the imternet information super highway opened the eyes of folks and made available info on what the originals were really like and it will take the over seas vendors time to correct, (if they do) some local builders allready are trying for a more authentic product but tooling costs are high so this will not happen quickly and more pressure from the buyers may be needed, in the meantime most use what they can get and keep a HC/PC type gun in mind for a future purchase which has the advantage of really knowing more about the hobby and being sure what period/persona one chooses before dropping over a grand or two into a gun.The main thing is to know what is what so one does not get into a situation where thye atre making claims that will not hold up about a particular gun,avoiding this type of situation helps keep ones spirits up I believe, and most serious re-enactors who are a few wrungs further up the ladder understand and respect this prosess as most were there once themselves at local 'vous with Wellington boots and a TC hawkins, topped off with a coat of long fringed Tandy yellow leather,I know I was, most all been there and not forgetten those days and the choices that were faced,and that stage of the game can be as much fun as it is 30 years later if/when one is decked out in full jury qualified outfits, good luck and enjoy the journey.