New to collecting, Love these pieces!

Cake plate is 10 1/4" diameter, serving bowl is 7 1/4".
Both are footed,have small diamond pattern, scalloped edges, 3 piece construction, and unmarked. There are a number of bubbles in the glass which leads me to believe they may be original pieces vs. reproductions. I acquired these at a thrift store, they seem unused, not a mark on them, which then makes me wonder if they are newer. They will be a wonderful center piece of my collection!