This is a lidded container with a piece by Yokozato Yo-zan (Suetaro), a holder of Nagasaki Prefecture's Intangible Cultural Property, made when he was 66 years old, and with his signature on the back (photo 5). It is likely intended for use as a sweets container. The size is 18cm in diameter and 12cm in height. With the lid removed, the rim is unglazed and slightly discolored. It was at my grandmother's house, so the details are unknown, but it is probably from the 1950s to 1970s, but I am not an expert. I hope you will find it useful.