Size and design the same as for the other two cent values excepting that the lower label is inscribed “EXPRESS.” The total number issued up to Aug. 31, 1864 was: Orange, 1,018,660; Blue, the last four months being partly estimated, 4,347,187. The number of unfinished, i. e., imperforate and part1y perforated, stamps received into the vault was 2,724,540. These are noted in the record, and are all blue.
An Historical Reference List of the Revenue Stamps of the United Stamps: Including the Private Die Proprietary Stamps
Boston Philatelic Society
Salem, Press of Newcomb & Gauss, 1899