5 Para Emergency Postage Stamp Currency

Serbia's 1915 postage stamp currency was a direct consequence of the country's catastrophic wartime position — with the National Bank's printing facilities overwhelmed and coin metal nonexistent, the Finance Ministry authorized ordinary postage stamps, affixed to small cardboard or paper backing, to circulate as fractional currency. The 5 Para denomination addressed the most acute shortage at the smallest end of daily transactions.

These disintegrated rapidly in circulation. Surviving intact examples are genuinely uncommon, not because of low print runs but because the format was never built to last a week in a coat pocket.