Proof Block Larger Than four 1986-87, plate proofs (I) with 5,900, (P) with 15,870 and (MS) with 1,200 including 900 progressives; issues consist of 1986 Marine Wildlife, UNESCO, Fungi, 1987 Flowers, Guides, America's Cup

细节
Proof Block Larger Than four 1986-87, plate proofs (I) with 5,900, (P) with 15,870 and (MS) with 1,200 including 900 progressives; issues consist of 1986 Marine Wildlife, UNESCO, Fungi, 1987 Flowers, Guides, America's Cup