It was made of copper, approx. 2.7 centimeters in diameter, and its prescribed weight was approx. 3.375 grams, which was lighter than that of the early Kanei-tsuho (coins).
銅製で、直径0.9寸(約2.7センチメートル)、規定量目は9分(約3.375グラム)と、初期の寛永通宝より軽めである。