I previously purchased unused items here. The yellow one is believed to be from Maruwa Kiln. 13.5 x 5.5 cm. The gray one is a B-grade item from Pottery, and the craftsmanship is somewhat rough. 13 x 6.2 cm. They have been sealed and used a few times. As they are handmade, the colors and glaze application vary. There are no chips, but there are some areas where the glaze has small bumps. Please purchase only if you understand Mingei (Japanese folk craft) aesthetics. m(_ _)m