unused Block of Four 3a. black on bright red, block of four consisting of two vertical pairs variety imperf. imperf. between, unused without gum; very rare. S.G. 8ad, £900. Photo | Christie's

Lot 40

unused Block of Four 3a. black on bright red, block of four consisting of two vertical pairs variety imperf. imperf. between, unused without gum; very rare. S.G. 8ad, £900. Photo

Details

unused Block of Four 3a. black on bright red, block of four consisting of two vertical pairs variety imperf. imperf. between, unused without gum; very rare. S.G. 8ad, £900. Photo