“NATIONAL BANK NOTE Co. NEW YORK” in white letters on colored tablet. “No.” followed by the plate number are in color and in italics, and follow the imprint in TL and BL positions, and precede it in TR and BR positions.
The imprint and plate number are on the same line, although at various distances. The imprint was normally centered in the margin of the pane (i.e., in the center of 10 stamps), except that on the bicolored stamps
of the 1869 series it was centered on each half pane (i.e., in the center of 5 stamps). Used on the issue of 1869, and the early plates of the 1870 issue.

“ENGRAVED BY THE NATIONAL BANK NOTE COMAPNY CITY OF NEW-YORK” on one line, with “No. X Plate.” underneath. The words “NATIONAL BANK NOTE COMPANY”
are in white on a colored tablet, while the other words and plate number are n the color of the stamp. Imprint and plate number were centered in the bottom martin only.
Used on the issues of 1861-6.

“TOPPAN CARPENTER & Co. PHILADELPHIA” in white on a colored tablet, with “No. X P” or plate number only in color on a line below the imprint.
The imprint is centered in the side margin, reading down in the left margin, and up in the right margin. Used for 1¢ plates 11 and 12. 12¢ plate 3,
30¢ plate 1 and 90¢ plate 1.

On later plates used only on the perforated issue of 1857, the word “Casilear” is deleted (although parts of it occasionally show, since it was left off by
doing partial transfers from the original transfer roll). “P.” occurs after the plate number, except on plates 10 & 11 of the 3¢ value.

“Toppan, Carpenter, Casilear & Co. BANK NOTE ENGRAVERS, Phila., New York, Boston & Cincinnati” one one line, with “No. X” showing the plate number on a line underneath.
The imprint is centered in the side margin, reading down in the left margin, and up in the right margin. The imprint and plate number are in the color of the stamp.
Used for the plates of the imperforate 1851 issue.

Toppan, Carpenter, Casilear & Co.