Set of seven pewter alloy plates. They are marked faintly on the bottom "Gematal". I believe they were produced in the '70's. Usually this type of product is made of aluminum, made to look like pewter. They are oven and freezer safe, a great way to serve hot food outside and keep it hot.
8 1/2" diameter
Similar pitcher available here: https://www.etsy.com/listing/80910278/pewter-pitcher-by-carson