Value of Old And Best Known Postage Stamps

Treskilling Yellow (Sweden)

The "Treskilling" Yellow, or 3 skilling banco error of color, is a postage stamp of Sweden, and holds the world's record auction sales price for a postage stamp.

Penny Black (Britain)

The Penny Black was the world's first adhesive postage stamp of a public postal system. It was issued by the United Kingdom of Great Britain and Ireland on 1 May 1840, for use from 6 May of that year. Although all London post offices received official issues of the new stamps, other offices throughout the United Kingdom did not, instead continuing to accept postage payments in cash only for a period. Post offices in some localities, such as those in the city of Bath, began offering the stamp unofficially after 2 May.

Mauritius "Post Office"

The Mauritius "Post Office" stamps are among the rarest postage stamps in the world, and are of legendary status in the world of philately. Two stamps were issued, an orange-red one penny (1d) and a deep blue two pence.

Inverted Jenny (United States)

The Inverted Jenny (or Jenny Invert) is a United States postage stamp first issued on May 10 1918 in which the image of the Curtiss JN-4 airplane in the center of the design was accidentally printed upside-down; it is probably the most famous error in American philately. Only one pane of 100 of the invert stamps was ever found, making this error one of the most prized in all philately; an inverted Jenny was sold at a Robert A. Siegel auction in November 2007 for US $977,500. In December 2007 a mint, never hinged example (one not previously affixed to a stamp album), was sold for $825,000. The broker of the sale said the buyer was a Wall Street executive who lost the auction the previous month. A block of four inverted Jennys was sold at a Robert A. Siegel auction in October 2005 for US$2.7 million.

Basel Dove (Switzerland)

The Basel Dove (Swiss German Basler Dybli or (older) Basel Dybli;German Basler Taube) is a notable stamp issued by the Swiss canton of Basel. It was issued on 1 July 1845 with a value of 2 1/2-rappen. At the time each canton was responsible for its own postal service. There were no uniform postal rates for Switzerland until after the establishment of a countrywide postal service on 1 January 1849. The only other cantons to issue their own stamps were Zürich and Geneva.

British Guiana 1c magenta

The British Guiana 1c magenta is "[r]egarded by many as the world's most famous stamp." It was issued in limited numbers in British Guiana (now Guyana) in 1856, and only one specimen is now known to exist.

Benjamin Franklin Z Grill (United States)

The Benjamin Franklin Z Grill, or simply Z Grill, is a 1-cent postage stamp issued by the United States Postal Service in 1868 depicting Benjamin Franklin. While stamps of this design were the common 1-cent stamps of the 1860s, the Z Grill is distinguished by having the so-called "Z" variety of a grill pressed into the stamp. The 1-cent Z Grill is generally considered the rarest and most valuable of all US postage stamps.

Source Article: Wikipedia