Proof Specimen Block of Four 12½c. yellow-green top left corner block of four backed on card, each overprinted "SPECIMEN." in carmine vertically, fine | Christie's

拍品 171

171

Proof Specimen Block of Four 12½c. yellow-green top left corner block of four backed on card, each overprinted "SPECIMEN." in carmine vertically, fine

细节

Proof Specimen Block of Four 12½c. yellow-green top left corner block of four backed on card, each overprinted "SPECIMEN." in carmine vertically, fine