Flayderman's Guide to Antique American Firearms says that the shotgun versions of these firearms were made in 10, 12, 14, 16, and 22 gauges, with 26, 28, 30, and 32 inch barrels, with a total production of around 5000. My copy of Flayderman's is an older copy, and only gives a value of $225 in fine condition, but that could have gone up at least some since that printing; the fact that you'rs is in 14 gauge, instead of 10, 12, or 16 might affect the value somewhat, but I can't imagine someone wanting to shoot one of these to begin with, because of the impossibility of finding parts if something was to break.