One of the problems with identifying an original Charleville is the fact that so many are in poor shape. The 1763 and 63/66 were used to a absolute deprecation. On many Charleville its very common to find random parts. The reason for the random parts is because many of the Charleville were sold off to civilians. For example the shaving down of the butt stock was a civilian alteration likely militia, in the continental army especially Washingtons Units the stocks were repaired but not altered by the armors. In the Northern Continental Army that invaded Canada and fought at Saratoga, The 1763 heavy and 1766 light Charleville shipped in 1776 found at Fort Ticonderoga are almost in perfect condition because there was very limited actions at the Fort after 1776, even when it was abandoned and retaken, there were skirmishes.