The plates of all values printed 200 stamps each upon the sheet. Before the stamps were distributed, each sheet was cut vertically into half sheets, the place where they were to be cut being marked on the plate by a vertical colored line, and each half containing ten rows of ten stamps each. Upon each side of the plate, at a little distance from the outer row of stamps, the tops of the letters being towards the stamps, and running along the sides of the 5th and 6th stamp from the top or bottom of the sheet, and part of the 4th and 7th stamp, is the maker's imprint, "Toppan, Carpenter, Cassilar & Co., BANK NOTE ENGRAVERS, Phila., New York, Boston and Cincinnati," with "No--P." in a second line. This imprint was afterwards changed by leaving out the third name. The one cent eagle is an exception, as the imprint here appears at the top and bottom of the sheet, running along the space covered by four stamps, and the sheet is said to have contained only 100 stamps. Upon some of the sheets, of the other values, from the first plate, there is also a vertical line from the top to bottom of the plate, probably upon each outer margin. Upon other sheets, this does not appear. Specimens of these are now difficult to obtain, as the wide borders at the sides, the top and bottom of the sheets, were usually cut off when the stamps were used. ONE CENT UNPERFORATED. The stamps are about ½ mm. apart between the nearest points of the tops and bottoms, and 1 mm. between the nearest points of the sides. It should be noticed that the top and bottom labels have a fine line parallel to the solid body of the inscribed labels, both at the top and bottom. The imprint is about 1½ mm. from the outer row of stamps. The central vertical line is about 1¾ mm. from each central row. The side vertical lines are about 3¾ mm. from the outside rows. These dimensions vary slightly. There is little appreciable difference in the stamps in a sheet, except in the thickness of the lines bordering or shading the ornaments. In some specimens, these lines are all fine in all parts of the stamp, in others, they are much heavier, and in others fine in parts and heavy in other parts, in many gradations. The color used seems to have been always the same, varying only in intensity, as more or less ink was left on the paper in printing. Dark, or pale specimens, with intermediate shades may therefore be found. The paper is always white, but more or less tinted with the color of the stamp from imperfect wiping of the plates. THREE CENTS UNPERFORATED.