unused 1951 (Oct.) 15c. on 2½a., variety surcharge double, fine mint, fine mint. B.P.A. Certificate (1952). S.G. 38a, #550. Photo

細節
unused 1951 (Oct.) 15c. on 2½a., variety surcharge double, fine mint, fine mint. B.P.A. Certificate (1952). S.G. 38a, #550. Photo

拍品專文

Note: A single sheet of the 15c. exists with surcharge double. The spacing of the double surcharge varies across the sheet.