6 Cents.—The ribbon inscribed with the value has four dark lines of shading where it turns under at the left side; in the original these lines are much shorter and thinner.

7 Cents.—The angles of the ball in the right lower corner of frame are capped by a minute semicircle of color: in the original both lower corners are the same.

10 Cents.—The label containing the inscription "U. S. Postage" is bordered with a white line which turns up in a ball at each end. That at the right encloses a minute semi-circular mark; on the original the ball is white on each side.

12 Cents.—The figure 2 at the turn encloses a colored dot above and below; the originals do not show color.

24 Cents.—The last of the half-circle of thirteen stars has the shading of the four lower points deepened; in the original the shading is equal throughout, and the same as on the other stars.