Proof 50mm Franklin $100 Banknote 24 Kt. Coin. This huge $100 Franklin 24 kt Gold layered Coin is encased in a hard plastic Presentation case. Was minted in 2010 and comes with a COA showing that this was the 2nd coin ever minted in this series of a total mintage of 9,999! Comes encased and sealed in a vinyl pocket casing with COA.