unused Block of Four -- ditto, a similar trio but in corner blocks of four, upper left showing "extra flagstaff" variety. Fine mint. | Christie's

拍品 1031

1031

unused Block of Four -- ditto, a similar trio but in corner blocks of four, upper left showing "extra flagstaff" variety. Fine mint.

细节

unused Block of Four -- ditto, a similar trio but in corner blocks of four, upper left showing "extra flagstaff" variety. Fine mint.