You could try ebay....you never know what will happen.

Sorry to tell you that you unlikely to get even a fracion of what you paid for it, just manage your expecation so that you aren't disapointed. If it's a reasonably good piece you could try taking it to a reputable auction house such as Sotheby's or Christies and asking them to appraise and sell it for you.

I'd go round a load of local pawn shops and see what they offer, compare what they all offer you, if someone offers you one price tell them another shop offered you a bit more and see what you end up getting. Make sure you don't just give in and sell it to the first shop you go in even if it does sound like more than you wanted because you might get even more elsewhere!!