You can change the Jizo statues for each of the four seasons: spring, summer, autumn, and winter. I believe they are prints, probably woodblock prints, rather than originals. The frames are likely aluminum. They have been displayed on the wall for a long time, so there is some fading and soiling, but looking at the Jizo statues soothes the heart. I am selling them as part of my end-of-life preparations.