This stamp represents a provisional postal issue released during the turbulent post-World War II period in Hungary, when rapid inflation required existing stamps to be revalued. An earlier definitive stamp of Magyar Kir. Posta (Royal Hungarian Post) was overprinted with a bold “1945 – 40 fillér” denomination for emergency postal use. Such overprints reflect the transition from wartime administration to reconstruction-era postal operations. Collectors value these issues for their historical significance, typographic variations, and connection to Hungary’s monetary instability of 1945. Well-centered examples with clear overprints are especially desirable in thematic WWII or inflation-period collections.