The value of each FUNGIBLE•NOT•FUNGIBLE is equivalent to ~3g of silver, backed by an actual deposit of silver in the form of five Roman denarii totaling ~15g of silver.  Each original minter of the FIART collection of PFPs (aka, Former Fiat Coins, FFCs) receives 1 FNF rune. For more information see stablelabsbtc.com & ordinalsbot.com/mint/fiart.