This is a set of five lunch plates made by the former Toyo Toki, the old company name of TOTO, a top manufacturer of sanitary ceramics. Judging from the backstamp and the shape of the plates, I believe these were exported to the United States. They are antique plates comparable to Old Noritake. *Size: 27 cm in diameter Two of the five plates have slight scratches, likely from the manufacturing process. I hope that those who understand these are antique items will purchase them. Please refrain from purchasing if you are overly concerned about minor imperfections. For those in the food and beverage business, you could, for example, tell your customers, "These plates were made by TOTO, the company that makes Washlets!" Thank you for looking.