2 Mun Chong

The 2 Mun "Chong" pieces were struck by the military training command, the Hullyeondogam, one of several competing government agencies in Joseon Korea that operated their own furnaces and issued cash coinage independently of any central mint authority. This fragmented production system — unique among East Asian monetary administrations of the period — means coins of nominally identical type can show dramatic variation in alloy quality and flan preparation depending on which bureau cast them.

The Hullyeondogam's casting records from the mid-Joseon period document chronic shortages of copper, with bronze frequently debased through increased lead content across successive production runs.