Encased postage is the child of the Civil War. When small change became increasingly scarce in 1862, Julian Gold was inspired to invent a system of encasing stamps from the 1861 series in specially designed holders. These holders, known as “Abbass Holders,” featured an open face holding a stamp, backed by a piece of cardboard, and covered by a piece of transparent mica. This design was patented on August 12, 1862. Their usefulness largely expired in 1863 with the issue of Spiner’s fractional currency.
From 1862–1863, encased postage was issued in denominations of 1, 3, 5, 10, 12, 24, 30, and 90 cents. Additionally, a 2¢ stamp was used for a very rare internal revenue issue. The denominations of 24¢ and up are particularly rare. In total, 341 different examples…