Is this a rifle or Carbine? This would have been made by Pedersoli, these are excellent quality weapons. Price can run $800-$1200 depending on condition. The good Milspec 3 groove bore, excellent for BP shooting. Rated for standard pressure smokeless .45-70.
A bit light for a Target weapon, (Particularly if a carbine) though the infantry rifles have made good scores in BP sillouette; but again excellent for hunting or action shooting. You can never go wrong starting with a .45-70.