I have an original 1861 that doesn't match any of the images online. Has two barrel bands clamped with no strap hardware no sign of being replaced, no band springs, eagle behind hammer, 1861 stamp ahead of hammer, no strap attachment on trigger guard, 119 stamped behind guard plate behind, ring attachment between last two screws, rear sight with three scallop level starting at the front also original sight. Bayonet lug, no observable part changes, no nipple clean out port. Anyone have a clue as to where it fits?