Shaped like small silver slugs with a weight of between about 1 monme (approx. 3.75 g) to 10 monme (approx. 37.5 g), Mameitagin are silver coins that were valued by weight.
形状は小粒の銀塊で、重量は不定だが1匁（約3.75グラム）から10匁（37.5グラム）程度の秤量銀貨である。