unmounted mint 2½d. royal blue, an unmounted mint example from the lower left corner of the sheet, fine and fresh. Photocopy of R.P.S. Certificate for the original corner block of six. S.G. Spec. N21 (16), #250. Photo | Christie's

拍品 4556

4556

unmounted mint 2½d. royal blue, an unmounted mint example from the lower left corner of the sheet, fine and fresh. Photocopy of R.P.S. Certificate for the original corner block of six. S.G. Spec. N21 (16), #250. Photo

細節

unmounted mint 2½d. royal blue, an unmounted mint example from the lower left corner of the sheet, fine and fresh. Photocopy of R.P.S. Certificate for the original corner block of six. S.G. Spec. N21 (16), #250. Photo