|Illustration from the Corpus Nummorum Italicorum|
|Measurements and composition|
Iron Crown, "MOИ TA D'ASSE.o PALMA", year
"ИAPOLEOИE IMPERE", value
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The 25 centesimo coin is a siege coin that was issued in 1814 by the Italian city of Palmanova, which at the time was part of the Kingdom of Italy under French Emperor Napoleon I. At the time of the coin's issuance the city was under siege by Austrian forces. The coin had a value equal to 0.25 lire prior to its eventual demonetization. A similar 50 centesimo piece was also produced.
The coin is composed of a billon alloy, and has a mass of 9.5 grams and a diameter of 23 millimeters. It is imperfectly round in shape and has coin alignment. A radiant depiction of the Iron Crown of Lombardy, the ceremonial headpiece worn by Napoleon during his coronation as King of Italy, is displayed in the center of the obverse. "MOИTA D'ASSEO PALMA", a shortened form of the Italian text moneta d'assedio Palmanova (English: "Siege coin of Palmanova"), is engraved around the coin's rim, starting at the bottom left periphery and extending upwards before arching downward at the top of the coin to end at the opposite side of the obverse. The date "1814" is printed at the very bottom of the coin. Featured in the center of the reverse is the value "CEИTI 25" (short for 25 centesimi), with the word and numeral each printed on separate lines. The legend "ИAPOLEOИE IMPE E RE" (Napoleone Impere e Re; English: "Napoleon, Emperor and King") is engraved around coin's rim, and a pomegranate, signifying production at the Milanese Mint, is featured at the very bottom of the reverse, separating the beginning of the text from the end.
Only one example of this coin is known, and it is currently in the possession of a museum in Udine.