It appears to be Arita-yaki Ryuhogama ware. I'm not very familiar with it. Arita-yaki Ryuhogama Dishes, Set of 5, Blue and Yellow Floral Pattern/White Background with Blue Design They have been stored for a long time. They will be sent via宅配便 (courier service). The box is deteriorated. It will be sent as is from storage. Approximately 8.5 cm in diameter. #m78dishware Set of 5 ceramic dishes with blue and yellow decoration. - Quantity: Set of 5 - Design: Blue and yellow decoration - Quantity: Set of 5 - Design: White background with blue decoration - Markings: Blue mark on the bottom - Material: Ceramic Thank you for viewing.