EDO PERIOD (18TH CENTURY), BURNED SEAL DEME MITSUNORI (ONO DEME V) AND SIGNED AND INSCRIBED IN GOLD LACQUER KADEN NO KATA SOI NAKI MONO NARI, KITA SHICHIDAYU KONO AND KAO (CURSIVE MONOGRAM)

The name Sankojo comes from Sankobo (d. 1532), a Buddhist monk who first carved one of this type. It is used mainly for old-man roles.
Kono, whose name is inscribed in gold lacquer on the interior of this mask, was an actor of the Kita school active in the mid-Edo period.