While these were official government issues, the term "private" is often associated with specific historical collections that handled these reprints.
Authentication is critical because the regular 1873 issue and the 1875 special printing look very similar. Professional authentication from firms like Robert A. Siegel Auction Galleries or the Philatelic Foundation is standard for this rarity. Regular 1873 Issue 1875 Special Printing (#167) Thin, yellowish/creamy Hard, bright white Gum Usually present Issued without gum Perforations Perforated 12 Perforated 12 (often poorly centered) Color Ultramarine Usually a more vivid Ultramarine Market Value Private Special Reprint Nr 167
In 1875, the U.S. Post Office decided to re-issue all previously released stamps for public display and sale during the nation's Centennial celebrations. Because the original 1873 stamps were still in use, these new versions were printed on without gum, distinguishing them from the regular "soft paper" issues meant for general postal use. While these were official government issues, the term
These "special printings" were authorized by the U.S. Post Office for the 1876 International Exhibition in Philadelphia to showcase all stamps issued up to that date. Historical Background of Scott #167 Siegel Auction Galleries or the Philatelic Foundation is
: Only 388 copies were ever sold, and today there are approximately 45 to 52 confirmed survivors , making it one of the rarest U.S. stamps. Provenance and "Private" Reprints
: Printed by the Continental Bank Note Co. using line-engraved intaglio on flat plates.