LIMITED EDITION AND VERY COLLECTABLE. 1984 -1987 ROYAL MINT PIEDFORT PROOF SILVER. This One Pound Silver Piedfort Proof set issued by the Royal Mint contains the four coins issued representing the home nations.The obverse design shows a portrait of Queen Elizabeth II designed by Raphel Maklouf. Diameter: - 22.5 mm. Weight: - 19.0 grams. ALL IN very GOOD CONDITION. SEE Cowell coins ITEMS FOR MORE COINS. The item "UK 1984 1987 4 X £1 PIEDFORT SILVER PROOF SET box/coa STUNNING CONDITION FDC" is in sale since Tuesday, November 10, 2015. This item is in the category "Coins\Coins\British\Proof Sets/Coins\2000s". The seller is "cowell-coins" and is located in Ashford. This item can be shipped worldwide.