1 Mun; Small Typ Yong

The "Small Type Yong" designation distinguishes this issue from the heavier, broader cash coins produced earlier in the Joseon period — the reduction reflecting chronic copper shortages that plagued the kingdom's mints through much of the eighteenth century. By 1742, the Joseon government had been struggling for decades to maintain consistent coinage, with private casting and counterfeiting so widespread that official mint output was frequently undermined before it reached circulation.

The Oseong reference places this piece within a carefully documented typological sequence, useful for attribution given how frequently Joseon cash coins are misidentified across the regional mint varieties.