1 Mun Yi Chong

Historical Context: The 1 Mun Yi Chong, issued in 1633, originates from the Joseon Dynasty during the reign of King Injo (1623-1649). This period was marked by significant political turmoil, including the looming threat of the Second Manchu Invasion. The issuance of copper coinage like the Yi Chong Tong Bo represented an effort by the Joseon court to standardize currency and promote a monetary economy, moving away from traditional barter, though widespread adoption faced considerable challenges.

Artistry: Specific engravers for Joseon cast coinage are generally unrecorded. The coin adheres to the East Asian cash coin tradition, featuring a square central hole for stringing. The obverse displays the inscription "Yi Chong Tong Bo" (李種通寶), meaning "Yi Chong Circulating Treasure," rendered in a clear, official calligraphic style, read top-bottom, then right-left. The reverse of KM#5 is typically plain, emphasizing the functional and standardized nature of the design.

Technical/Grading: As a cast copper coin, evaluation focuses on casting quality rather than strike. High-points include the raised calligraphic characters and the outer rim. Well-preserved examples exhibit sharp, complete character strokes and minimal porosity. Imperfections such as incomplete fills, rough edges from sprue removal, or uneven planchets are common due to the manufacturing process. Wear typically manifests as smoothing of the characters and inner edges around the central hole from stringing, with a stable dark brown or green patina often present.