Each year from 1970 until 1996 the Royal Mint struck a special rectangular medal for inclusion in the Proof Set. These medals are bronze and have sometimes been darkened to blend in with the Proof Set. They are dated and they issued one a year. Here we offer the 1973 medal. We normally sell these medals for between £3.95-£5.95, but right now we are selling them at a special price, because we need the storage space!