How much has the metal in coins appreciated since October?

Over the last six months the metal in 5c, 10c, 20c coins has become more valuable than the coins themselves amid soaring commodity prices.

Prices as of 5 Oct 21 and 4 Apr 22. Metal prices have been converted from USD to AUD at a rate of 0.76.
Chart: Lewis Jackson Source: Coin weights and metallic content: Australian Mint ; Metal prices: London Metal Exchange and Morningstar Commodities