A historically important provisional issue from Italy, this 20 centesimi stamp of King Victor Emmanuel III was locally overprinted “Venezia Tridentina – 20 Heller” during the immediate post-WWI occupation of the Trentino region. The overprint reflects the temporary use of Austro-Hungarian currency (Heller) before administrative integration into the Kingdom of Italy. Collectors value this issue for its transitional postal history, strong typographic surcharge, and its connection to shifting borders after the collapse of the Austro-Hungarian Empire.