Isle of Man. 'Penny Black' 2 Crown, 1990. KM-267b (Double weight unlisted). Gold weight 62.2 grams 999.9 Fine (2 Ounces, '2' below bust). Mintage 200 struck. For the 150th Anniversary of "Penny Black" stamp. With certificate. NGC graded Gem Proof. Estimate Value $2,200 - 2,500