From 1875 through 1884, the Post Office sold new printings of past and present U.S. stamps. These special printings allowed anyone to own copies of every U.S. stamp. The U.S. Centennial celebration of 1876 inspired the idea.
Most of the special printings sold poorly. As a result, U.S. stamps are rarer (sometimes much rarer) as special printings than the original stamps. Special printings are among the hardest stamps to fill in for anyone trying to acquire a complete U.S. collection.
These are some of the rarest special printings in the Miller collection. The collection also includes special printings of carrier and newspaper stamps.