2 Mun Yong; Metal

The 2 Mun coins of Joseon were produced by a decentralized network of government offices, military bureaus, and royal institutions — each authorized to strike their own coinage, which is why catalog attribution depends heavily on the foundry marks cast into the reverse. The Oseong reference places this piece within a specific issuing office's production run, a detail more diagnostic than the date itself.

By 1752, Joseon had been running a managed copper-alloy currency economy for roughly a century, following the mass adoption of the 1 Mun Sangpyong Tongbo after 1678. Brass composition in this period often reflects regional variation in zinc sourcing rather than a deliberate monetary policy shift.