This is an authentic vintage Japanese Chidou mask for Gigaku made of Kanshitsu, dry lacquer from mid.1900's.
Gigaku (Kure-gaku) refers to an extinct genre of masked drama-dance performance, imported into Japan during Asuka period.
Chidou means opening the way,leads the procession part. This mask has been suggested as precursor of the depiction of Tangu.
It has incredible facial expression and will be a great wall decoration.