I am a Pennsylvania resident, as was my father. I have his .357 Magnum that I would like to sell but I am not a registered gun owner. Do I have to first apply to be a registered owner in order to sell this gun? I don't have any receipts for this gun or a registration card. (I honestly don't know if they come with a registration card or not but if they do, I don't have one.) Does anyone know if this gun can be sold with just a death certificate of the registered owner? Thank you for any assistance you can give.