No. 1

[roundtop]

You have a roundtop sporting rifle, looks to be ok. The serial number should be on the bottom tang near the screw or sometimes on front of receiver, on the bottom of the barrel under the fore end, front of butt stock, under butt plate, back of fore arm and on fore end tip under wood. Your fore tip is the later style but some are known on guns in the 500 & 600 ranges. They normally are smooth and not the schnabel. When you pull off the butt stock there is usually a set of numbers on the left tangs. These numbers should be the same. I am doing ongoing research on these early rifles and I would greatly appreciate knowing the serial number and the tang numbers for my records. You can send them through the society for privacy. The last patents on the tang are 1866. Your rifle was most likely made late in 1871 or early 1872. I hope this helps. Ed