unused Block of Four 3d. black and brown, a lower left corner block of four with one showing "C" and "A" missing from watermark, fine mint. Very rare. S.G. 100a, unpriced. Photo | Christie's

Lot 411

411

unused Block of Four 3d. black and brown, a lower left corner block of four with one showing "C" and "A" missing from watermark, fine mint. Very rare. S.G. 100a, unpriced. Photo

Details

unused Block of Four 3d. black and brown, a lower left corner block of four with one showing "C" and "A" missing from watermark, fine mint. Very rare. S.G. 100a, unpriced. Photo