The Interior Departmental Stamp Designs of 1873

Plates of 100 stamps - Perforated 12 - Issued July 3, 1873
Printed by the Continental Bank Note Company on "thin, hard" whitish paper

Scott O15
1¢ Franklin
Scott O16
2¢ Jackson
Scott O17
3¢ Washington
Scott O18
6¢ Lincoln
Scott O19
10¢ Jefferson

Scott O20
12¢ Clay
Scott O21
15¢ Webster
Scott O22
24¢ Scott
Scott O23
30¢ Hamilton
Scott O24
90¢ Perry

Note that all but the 30¢ and 90¢ Interior Departmental stamps were issued again in 1879 by the American Bank Note Company on soft porous paper. The stamps are distinguished by paper type, the Continental stamps are on thin hard paper and the American stamps on soft porous paper:

see: Bank Note Paper Types

One Cent Interior Stamps
Scott O15 - Continental Bank Note Printing of the Interior Department 1¢ Franklin stamp - Dull to bright vermilion
Scott O96 -American Bank Note Printing of the Interior Department 1¢ Franklin stamp - Vermilion, pale vermilion

Two Cent Interior Stamps
Scott O16 -Continental Bank Note Printing of the Interior Department 2¢ Jackson stamp - Dull to bright vermilion
Scott O97 - American Bank Note Printing of the Interior Dept. 2¢ Jackson stamp - Vermilion, pale vermilion, scarlet vermilion

Three Cent Interior Stamps
Scott O17 - Continental Bank Note Printing of the Interior Department 3¢ Washington stamp - Dull to bright vermilion
Scott O98 -American Bank Note Printing of the Interior Department 3¢ Washington stamp - Vermilion, pale vermilion

Six Cent Interior Stamps
Scott O18 -Continental Bank Note Printing of the Interior Dept. 6¢ Lincoln stamp - Dull to bright vermilion, scarlet vermilion
Scott O99 -American Bank Note Printing of the Interior Dept. 6¢ Lincoln stamp - Vermilion, pale vermilion, scarlet vermilion

Ten Cent Interior Stamps
Scott O19 - Continental Bank Note Printing of the Interior Department 10¢ Jefferson stamp - Dull to bright vermilion
Scott O100 - American Bank Note Printing of the Interior Department 10¢ Jefferson stamp - Vermilion, pale vermilion

Twelve Cent Interior Stamps
Scott O20 - Continental Bank Note Printing of the Interior Department 12¢ Clay stamp - Vermilion to bright vermilion
Scott O101 - American Bank Note Printing of the Interior Department 12¢ Clay stamp - Vermilion, pale vermilion

Fifteen Cent Interior Stamps
Scott O21 - Continental Bank Note Printing of the Interior Department 15¢ Webster stamp - Vermilion to bright vermilion
Scott O102 - American Bank Note Printing of the Interior Department 15¢ Webster stamp - Vermilion

Twenty-four Cent Interior Stamps
Scott O22 - Continental Bank Note Printing of the Interior Department 24¢ Scott stamp - Dull to bright vermilion
Scott O103 - American Bank Note Printing of the Interior Department 24¢ Scott stamp - Vermilion

Thirty Cent Interior Stamp (Continental only)
Scott O23 - Continental Bank Note Printing of the Interior Department 30¢ Hamilton stamp - Vermilion to bright vermilion

Ninety Cent Interior Stamp (Continental only)
Scott O24 - Continental Bank Note Printing of the Interior Department 90¢ Perry stamp - Vermilion to bright vermilion