20 Para Emergency Postage Stamp Currency

Obverse description	Brown letterpress print on pale paper with perforated stamp-format edges. Central vignette shows King Peter I of Serbia accompanied by generals, all oriented left toward the battlefield, rendered in a compact engraved style typical of contemporary postage stamp production. The denomination numeral and Cyrillic inscriptions are set above and below the vignette within the narrow stamp format.
Obverse lettering	20 П. СРБИЈА КРАЉ ПЕТАР НА БОЈИШТУ 1914. (Translation: Serbia King Peter on the battlefield 1914.)
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Comments	Serbia's 1915 collapse under the combined Austro-Hungarian and Bulgarian offensive forced the government into a complete monetary improvisation. With the National Bank evacuated and conventional printing impossible, postage stamps were formally authorized as fractional currency — a desperate but legally deliberate act, not an improvised field measure. The 20 Para denomination was among the smallest values pressed into this role. These pieces survive in wildly varying states; the thin, ungummed paper used for the currency printings degrades differently than standard stamp stock, and distinguishing the two requires attention to gum traces and perforation consistency.