Will do the best I can, don't bother to ask for photo's as I don't know how. It is a boxlock but I can find no proofs. Gun is hammerless and opens with a centered lever. Matching seriel numbers ( very low 941 ). On the right side plat it has A.M.Arms Co. Boston and under that it has two patent dates March 21, 1882 and May 29, 1883. On the l;eft side plate I am only able to make out M1 Hammer Fs9" and then ( TRA DE Mark 1 ). The unique thing about it ( and the reason I bought it ) when you open and shut the breech it does not cock the gun. It has a short lever on the left side plate that you thumb push down to cock the gun. Neat, huh!! Has a checkered pistol grip stock and checkered forepiece. Any ideas??