Japan, Empire. Meiji era AG 20 Sen. Dated M4 = 1871. 年四治明 · 本日大 · 錢 十 二 ·, dragon coiled leftward within pelleted circular border; denomination below / Sunburst crest within pelleted circular border; chrysanthemum between two paulownia flowers above, open-topped wreath below. KM Y3.
NGC graded AU 58 (#6027927-008). A very rare variant missing the lower stroke in the character seen on the obverse.
From the inventory of a UK dealer.