does it have something to the effect of "made in the 200th year of liberty" printed on the barrel??
pics would help. ruger makes a LOT of varients. i cant find any 41mags made in 76.
from your info it sounds like a blackhawk single in 41 magnum value in my blue book goes from 400-700$ depending on condition add 50-100 for liberty barrel. 700 is new in box with all packing materials pieces and parts manuals etc. 400 is 85%
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith