Designed by David Gentleman
Size 41mm (h) x 30mm (v)
Printed by Harrison & Sons Ltd
Print Process Photogravure
Number per sheet 100
Perforations 15 x 14
Gum PVA Dextrin
Stamps
Charles Darwin and Giant Tortoises
15½p
Darwin and Marine Iguanas
19½p
Darwin, Cactus Ground Finch and Large Ground Finch