2 Mun, Depart Yong

The "Depart Yong" cash coins were struck by the military finance bureau Eoyeongcheong, one of several competing government offices authorized to produce coinage during the mid-18th century Joseon monetary expansion. The proliferation of issuing authorities under King Yeongjo created an identification problem that the reverse mint marks were specifically introduced to solve — each office's coins circulated at face value but were traceable to their source for accountability purposes.

The KM#331.2 designation distinguishes this by a reverse character variant. Joseon mun coinage of this period is notoriously difficult to attribute without that reverse, as casting quality varied dramatically between furnaces even within the same bureau.