Guyana 1985-89 Orchids Series 2 plate 70 (Sanders' Reichenbachia) unmounted mint imperf single in black & yellow colours only with blue & red from another value (plate 84) printed inverted, most unusual and spectacular
Guyana 1985-89 Orchids Series 2 plate 70 (Sanders' Reichenbachia) unmounted mint imperf single in black & yellow colours only with blue & red from another value (plate 84) printed inverted, most unusual and spectacular