I have these Circle City Mint bars that the little I researched showed that they carry a premium. A ten ounce sold in 2018 for 300 dollars when silver spot was are 15 an ounce. So by today's prices that should be in the 500 range. I have a ten, five , and 2 Troy ounce bars. I'd like to sell them all as a lot. Does anyone collect them and want to make me an offer on the 3 bars?