Antique 1861 Colt Navy-Navy cartidge conversion. We believe this to be a Richards Mason conversion with a unique ejector handle variation: a cone-shaped handle that we've been unable to find anywhere. It is definitely not a new addition -- possibly custom-made by a gunsmith to make it easier to eject spent shells. Marked with "R.W.M" with an anchor, the mark of Richard W. Meade, inspector, New York. Overall very nice condition, functions well. Because of its age, this is considered a non-firearm by the ATF and can be shipped directly to any buyer who can legally purchase and receive it. Please note that we will follow ALL applicable federal, state and local laws regarding the sale and shipment of firearms, whether antique or not.