Hello! I have 12 out of 13 Daughters of the American Revolution bottles from 1979. They are marked DAR 1979 on the bottom and are about 5" tall. I have found information about the bottles, and supposedly the molds were broken so they could not be made again. Most are in excellent condition. A couple have microscopic chips on the bottom. One has a bottom corner completely broken but can still stand up. How much do you think this set is worth? Thank you!!