GREAT BRITAIN 1982 CHARLES DARWIN CENTENARY ESSAY BY DAVID GENTLEMAN
Signed essay in black ink featuring giant tortoise and iguana by David Gentleman, on perspex film affixed to thin card measuring circa 232 x 195 mm, for Charles Darwin Centenary set issued 10 February 1982. Extraordinary and unique. SG1175var/1176var; SC965var/966var
Note: the dual-creature concept was ultimately split into two issued designs, 15½p featuring the giant tortoise and 19½p featuring the iguana