This is a George Washington Peace Medal minted by the U.S. Mint Since I got this from an estate it doesn't have a COA . Peace medals have been minted for several hundred years but this is of course not vintage. It is authentic from the mint however.Hope I understood and answered your question.
The other two sizes were from US Mint 1956 issue dated , do not know when the mini- gwp metals were offered , could not even guess their value . Did notice stamping impression not as deeply imprinted as previous issued replica . Everything is smaller these days .