Just like to share these rounds I picked up. The Freedom America medallion is from 1970 and celebrated Christian Gobrecht, chief engraver for the US Mint in 1840. Designed by Toivo Johnson, a New York coin dealer in the 1960’s. 1 avoirdupois ounce. .999 silver. The other is from a set of 9 medallions minted for the Seattle World Fair in 1962. 15,000 mintage, 30 gram 999 silver. Both were minted by the now defunct The Metal Arts Co Inc. Rochester NY.