What condition? Box, documents, original grips, etc.? If it is just an ordinary shooter with minor use wear, $300-$500. Bad wear, pitting, non-original grips, $300 or lower. Unfired in original box, $800 - $1,200 or maybe more.
I hate to do this. Why ?? Because I would feel bad if someone lost money on a weapon because of my bad advise. And .... if they make money because of my good advise they never offer me any.
Sooooooo ..... I would say ---> clean the ol' girl up real pretty and take her to the next Robertsdale gun show. Carry it around to some of the more "knowing" dealers and ask them how much they will be willing to give you for the gun. Let them know that you will go to a number of dealers before you will make the decision to sell.
THEN ---> average all the offered prices out and add somewhere between 20 and 40%. That is probably what you will end up with from a individual(non-dealer) if the weapon is in good shape,meaning not NIB and not shitty. --- SAWMAN