As Genroku-Koban (a gold coin smaller than the Oban) and Genroku-Chogin (silver coin) were released according to the Genroku's currency reforms of September 1695, the Oban was issued with a decreased gold content and its minting was mainly done at a minting place built in a radish field near Ryoun-ji Temple in Hongo, Edo (Bunkyo-ku Ward, Tokyo) where Genroku gold and silver was also processed.
元禄8年（1695年）9月の元禄の吹替え（改鋳）による元禄小判および元禄丁銀の発行に伴い、大判も品位を下げて発行され、鋳造は元禄金銀と伴に専ら江戸本郷(文京区)霊雲寺近くの大根畑に建てられた吹所で行われた。