This goes against everything I believe in because ivory hunting is BS, but this was a gift from my Grandpa and I wanted to know how much they are worth. There are two in the set. Very, very heavy. Funny story from my 20s- I had them on my bed mantle and was fooling around with a guy and the tusk fell off, hit him in the head, and knocked him unconscious. Anyway, how much do you think they are worth?