Cayman Islands 1990 Gold Proof Set a 4-coin set 25th Anniversary of the Death of Sir Winston Churchill comprising $250 One Ounce, $100 Half Ounce, $50 Quarter Ounce and $10 One Tenth Ounce KM#PS28 only 500 sets minted, a seldom offered set, FDC in the blue Royal Mint box of issue with certificate