This is a large celadon plate. On the back, it says "Keizan Saku" (Made by Keizan). It is 36 centimeters wide and 12 centimeters high. When I purchased it over 30 years ago, it had a price tag of approximately 45,000 yen. It came in a wooden box when I bought it, but I have since discarded the box. I am an amateur, so I do not know the value. Please take a look at the photos and consider purchasing it. Please note that returns are not accepted. I will carefully pack and ship it.