This was the first and only example of a successful piece of earthen pottery with a reddish color paint in the 17th century aside from Arita-yaki (Arita pottery), which was the first Japanese porcelain, since reddish color paint requires a delicate glaze compound and burning.
調合・焼成の困難な赤色系の絵付を17世紀に成功させたのは、磁器を国内で初めて製作した有田焼以外ではこれが唯一の例であり、かつ陶器では国内初であった。