Fuchin is the name given to weights for Japanese scroll paintings.
Apparently secondary, but as usual in Japan, the highest attention is paid to design and material, from simple wood to crystal clear cut rock crystal.
The weight of the Fuchin is supposed to support the Kakejiku, which is mostly kept in boxes, when hanging out and to tighten the hanging roll.
Essential or desirable for storing the scroll paintings, as usually only one picture is hung and the unused ones are stored in these boxes in the meantime.
Kakejiku with original boxes signed and stamped by the artist are rather a rarity.
All offered boxes come from Japan, the former scroll paintings are no longer available, so they are now available for other Kakejiku. The indicated dimensions are the inside dimensions. If your roll image is a bit shorter, this deviation could be compensated by shifting the seats for the roll ends.