Re: Hopkins and Allen XL8
It looks to be a H&A Army Model, However in spite of the name there is no record of the US military ( or any Military ) ever ordering them or using them.
There was a Army Model, Navy Model and Police Model. Manufactured from the late 1870's until the early 1880's. Flayderman's guide states only a few hundred were made. It is listed in good condition at 500, yours seems to be less than good so I would scale down the value accordingly. FWIW, nickle plating was desirable in the black powder era because of the ease in cleaning, later in the modern smokeless cartridge era most inexpensive firearms were nickle plated because it was cheaper to plate them than have a workman spend the time polish them for bluing. Blued guns usually sold for a few cents more on the market.