Heavy vintage Lolita Medusa belt

I'm selling my vintage gold Medusa belt is so old and heavy you can't even read the back of the belt anymore I bought it at an estate sale for $100 and the lady said that it was worth hundreds that's why I bought it it's been in my collection for 5 years and I'm ready to let it go for 150 or your best offer I remember she did say that she had picked it up in Italy on a trip prior years prior. her husband had passed away and she was selling the house and everything in it.