War stamps - Postage stamps issued in wartime and so inscribed. Also 'War Tax'. Normally issued to meet increased postal rate.
Watermark - Semi-transparent pattern impressed into paper during manufacture as a guard against forgery.
When the Civil War broke out in 1861, the Union government had the USPOD issue a full set of new stamp designs, and declared all previous stamp issues no longer valid for postage, so that any stocks of pre-War stamps in the South were rendered ...
com Refresher Course Collecting stamps from the front to the back of the book by Janet Klug.
^ War Stamps by James Mackay, sandafayre.com.
^ a b "New Collector" by John Holman in Gibbons Stamp Monthly, Vol.40, No.10, March 2010, p.31.
stamps, selvage markings can explain where a pane originated on the larger sheet before it was processed. A pane position diagram is shown in the selvage of the 32¢ Civil War stamp pictured at top in Figure 6. The Civil War stamps were issued ...
Prisoner of War stamps: local post stamps printed by prisoners in camps.
Prisoners Letter, Examined: censor marking for mail sent from Southerners in Northern prison camps addressed to the South during the American Civil War.
 See also: Strip, Civil War, Used, Stamp, Front
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