Eaglenest,the Isle of Man is a self-governing dependency,so its coins are listed separately.Could you please post some photos of the coins? From what I can guess,it is a set of bullion medal-coins that was struck at the Pobjoy Mint (notorious for their Gibraltarian & Manx medal-coin issues,especially 1 Crown pieces,& 1/5 Crown gold pieces,among others.),whose 'PM' mintmark can be found below the portrait of Queen Elizabeth II on the obverses.These pieces may have die letters (2 letters on the reverse) located somewhere in the coins' designs.You will need a magnifying glass to see them.
Aidan.
Aidan.






















