I have a 1861, purchased in about 1964, used, and it is an uncommon piece. I believe that the stock parts (barrel bands, etc.) are original, stamped with the "U". The lock is a Springfield. The stock is likely also original, given its barrel maker, though the inspection stamps have disappeared. The barrel is a Bill Large, 8 land & groove. At the time when Bill Large was making barrels original parts would have been widely available. It is a good shooter, but now at 86 years old, I have not shot it a number of years, and probably will never shoot it again, so am considering sending it on to a new home. It handles either Minie or patched round ball very well, though the RB may have an edge. Located southern NH.