This is likely a product from the late Showa era. It is an unused item, although it is old and shows some minor signs of wear. It comes in a cloth-covered box. Length: approximately 18 cm, Width: approximately 12 cm. There are no noticeable chips or damage to the inkstone itself. There are scratch-like marks on the surface, but these are likely polishing marks from the manufacturing process. There is a marking, possibly a maker's mark, on the surface of the box, but we are unsure of its meaning. Thank you.