http://www.historynet.com/the-inverted-airmail-stamp-side-bar-may-94-aviation-history-feature.htm From the World's Largest History Magazine Publisher Sat, 21 Nov 2009 23:31:52 -0500 http://wordpress.org/?v=2.8.4 hourly 1 http://www.historynet.com/the-inverted-airmail-stamp-side-bar-may-94-aviation-history-feature.htm/comment-page-1#comment-116284 Steve Unkrich Sat, 12 Sep 2009 13:07:56 +0000 #comment-116284 Your article which refers to the "24c airmail invert center of 1918" has a couple of errors. First, philatelist refer to this stamp as the "Inverted Jenny". Second, it was not the first stamp to be printed in two colors. Many postage stamps, as well as revenue stamps of the United States, were printed as bi-colored stamps in the 1800's. The higher values of 1869 were printed bi-color as well as the entire set of Pan-American Exposition Issues of 1901. The second issue revenue stamps of 1871-72 are all bi-colored as well as the 1899 issues. Your article which refers to the “24c airmail invert center of 1918″ has a couple of errors. First, philatelist refer to this stamp as the “Inverted Jenny”. Second, it was not the first stamp to be printed in two colors. Many postage stamps, as well as revenue stamps of the United States, were printed as bi-colored stamps in the 1800’s. The higher values of 1869 were printed bi-color as well as the entire set of Pan-American Exposition Issues of 1901. The second issue revenue stamps of 1871-72 are all bi-colored as well as the 1899 issues.

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