The "Earth" (地) cash coins of this Joseon series were struck at the Hojo — the Board of Revenue — during a period when the Korean government was aggressively expanding copper cash circulation to suppress the persistent use of rice and cloth as currency. The two-mun denomination saw production distributed across multiple government bureaus, each adding its own mint identifier to the reverse, which is precisely why KM#78 and 79 are catalogued separately despite near-identical specifications.
The "Earth" (地) cash coins of this Joseon series were struck at the Hojo — the Board of Revenue — during a period when the Korean government was aggressively expanding copper cash circulation to suppress the persistent use of rice and cloth as currency. The two-mun denomination saw production distributed across multiple government bureaus, each adding its own mint identifier to the reverse, which is precisely why KM#78 and 79 are catalogued separately despite near-identical specifications.