Excal 1000, Excal II, Sovereign GT, CZ-20, Tiger Shark, Tejon, GTI 1500, Surfmaster Pulse, CZ6a, DFX, AT PRO, Fisher 1235, Surf PI Pro, 1280-X, many more because I enjoy learning them. New Garrett Ca
They are proof sets. Very cool. Most of the older ones are not worth a bunch and the value goes up & down with the price of Silver. I would keep them and enjoy them. My parents started buying them for me the year before I was born and I have continued to buy them every year. I have every set from 1955 to 2015