Like Mr. Russell above, the signatures I see are on this rifle which are present on later Bucks County rifles are the side-opening patchbox and the thumbnails on the guard and buttplate. Somehow the sheet brass, multi-knuckle hinged side-opening patchbox was kept in Bucks County rifles after previously appearing on seemingly distantly related gins like RCA 42 and the Deschler rifle. We don't know what the rifle the Leyendecker box came from, looked like. There are "Lehigh" side-openers but these rarely if ever show the double arch underline and look architecturally related to Bucks County rifles to me (long-wristed). This one could be intermediate as "longrifle evolution" was certainly not a linear process. Lots of blending of influences. It's sure fun to imagine it's related in some way to the earlier? Deschler rifle and later Bucks County rifles whose architecural prototype, in my mind, is represented by the Antes rifle with the daisy patchbox in RCA 1.