Showa Retro Antique Old Tool Black Stone Inkstone Thank you for viewing. Length: 17 cm Width: 10.5 cm Thickness: 3 cm It's quite old, possibly from my grandmother's mother's time, and it seems it was passed down and used. There are characters engraved on it, but I don't know the details. It seems paper was attached, perhaps used with thin paper. I washed it, but it didn't come off completely. Thank you very much.