Set of 4 Miniature Scallop Shell Plate

Cute set of 4 mini dishes. Use as jewelry holder, pits from a charcuterie board, ash tray. Stacks. Art Nouveau. Feet on bottom are all stable. Intricate designs on back. 

Has wear on each of them- vintage. See close ups, looks bubbly mixed in with high sheen from silver. Silver plated I believe, Made in Japan. Didn't see comps online besides Tiffany & Co salt cellars. 

3"x3.5"x0.75"