This is an example of a Spencer Model 1860 carbine which was converted into a Buffalo Rifle by H. Schroeder. The carbine was fitted with a 29 3/8 inch heavy octagon barrel with a dovetailed brass blade front sight and an adjustable semi-buckhorn rear sight. Behind the rear sight is marked "H SCHROEDER". There is a shallow dove filled tail slot where the marking is. The top of the receiver has a crude filled dovetail slot and the marking has been ground off. The serial number is marked on the upper receiver tang and the letter "M" is marked on the left side of the receiver directly ahead of the saddle bar base. The rifle is mounted with a smooth carbine forearm with a band spring slot and the original straight grip stock with the saddle ring base, carbine buttplate and wood filled sling swivel base slot. This particular rifle is pictured with close-up of the barrel marking, and briefly described on page 152 of "Spencer Repeating Firearms" by Marcot.