150th Anniversary of Dinosaurs Identification by Owen
Issue Date - August 20, 1991
SG 1573 - Iguanadon, 22p
SG 1574 - Stegosaurus, 26p
SG 1575 - Tyrannosaurus, 31p
SG 1576 - Protoceratops, 33p
SG 1577 - Triceratops, 37p
First Day of Issue Official Covers
