10 Coroane Transilvania (Siebenbürgen) and Banat

In late 1918, Romanian forces moved into Transylvania and the Banat following the collapse of Austria-Hungary. The new administration needed a practical solution to the currency problem immediately: Hungarian korona notes were still circulating but were politically unacceptable to leave unstamped. This note is the result — existing Austro-Hungarian banknote stock overstamped with Romanian authority markings to assert control over the monetary supply in the occupied territories.

The hybrid nature of these issues makes attribution messy. Forgeries of the overprints were in circulation almost immediately, and distinguishing genuine administrative stamps from contemporary fakes requires close attention to ink color and impression depth.