A one-of-a-kind inverted center. The only known example of this US 5¢ proprietary revenue stamp of 1871-1875 sold for a record $132,000 on Sept 13 1999 in New York City. It is the first time a US revenue reached the six-figure range.

"The market for revenues is finally catching up to the regular US market and many of the front-of-the-book collectors are now turning to the back-of-the-book issues," said Siegel president Scott Trepel.

Revenue stamps were used on tax proprietary articles like patent medicines, matches and cosmetics. Linn's