The 10-cent printings of the First Bureau Issues actually consist of four stamps. The first is a printing in dark green on unwatermarked paper, and the second printing of the same color is on watermarked paper. The third and fourth stamps are in shades of brown on watermarked paper. This color change was necessitated by the conformance to U.P.U. standards of colors for certain values. The U.P.U. printings in shades of brown have two distinct types, Type I and Type II.
Type I stamps are typically found in shades of brown and dark brown. Around the vignette of Daniel Webster is a white border. The circles around the numerals “10” do not penetrate (impinge) on this white border.
Type II stamps are typically found in shades of yellow brown or orange brown. In the Type II stamps the circles around the numerals “10” do impinge into the white border.
The plates producing the Type II stamps were the newer plates used to print the issues. They had been prepared by using the original dies, upon which the existence of the impingement is known but had been removed from the plates previously.
The 10-cent stamp was used to pay the first-class rate plus registry and double U.P.U. first-class rates. It could have also been used in combination to pay other rates for heavier items.