Papier-mâché "Kagura Mask" / Vintage Folk Art, Traditional Crafts, Mingei

I've forgotten where and when this was made, but I believe it's an old Kagura mask made of papier-mâché.
It might be a creative mask from Miharu, or perhaps a ceremonial mask from Korea... I apologize if my guess is wrong.

This is a vintage item purchased around 2018 at Bath House, the shop and office of Swimsuit Department in Kita-Aoyama, Tokyo.
It is in relatively good condition with almost no noticeable damage such as paint peeling or cracks.

Size/Dimensions: 135mm (length) x 100mm (width) x 35mm (height). Please note that these are amateur measurements and may contain some errors. A box is not included.
As I personally like vintage furniture and used clothing, I have stored it with those items. Therefore, please be cautious when bidding if you are particularly sensitive to odors. I do not smoke, so that should not be an issue.

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