The Hartford Arms Co. was a trade name used by Cresent Firearms (which appears to have been part of H & D Folsom Arms Co.--confusing, you bet). These were low cost firearms sold through major hardware stores in the late 1800's. They were usually not of the quality of a Winchester, Colt, or Remington firearm. Most of them were designed during the black powder years and should not be used with modern powder. That said, there is a small amount of collector interest in high grade or very good condition guns fron this era. The condition of the firearn will mean everything on this gun as far a value goes. The fact that it has exposed hammers might even help in this reguard. Damascus barrels would probably also be a plus. Even with all this (unless it is of museum quality) I would not expect more than $200 to $300 from a collector. Shooters should probably stay away fron it. If it is not in very good condition my advice would be to deactivate it ( to make it lawyer proof) and hang it over the fireplace.