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4 Mon 'Bunkyūeihō' Bosen, copper alloy, cursive script, KŌKAKU KATSUEN
| Issuer | Japan |
|---|---|
| Year | 1863-1868 |
| Type | Log in to see details |
| Value | 4 Mon |
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| Composition | Log in to see details |
| Weight | Log in to see details |
| Diameter | Log in to see details |
| Thickness | Log in to see details |
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| Obverse description | Log in to see details |
|---|---|
| Obverse script | Log in to see details |
| Obverse lettering | 攵 寶 永 久 (Translation: Eternal money of the Bunkyū Era) |
| Reverse description | The reverse displays an elaborate decorative design covering the entire field, centered on the square perforation. A series of overlapping fan-shaped or wave-petal motifs (seigaiha) radiate outward from the four sides of the central square hole, creating a symmetrical foliate pattern that fills the coin's surface. The design is deeply incuse with bold, well-defined lines, consistent with the high-relief craftsmanship expected of a bosen (mother coin) used as a casting matrix. The wide flat rim is plain and unadorned, conforming to the kōkaku katsuen (broad-rim, wide-edge) classification. |
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| Reverse lettering | Log in to see details |
| Edge | Plain |
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