Oyster Plate Glass Tray Handmade Poland Smooth top

Clear Glass Oyster Plate or Tray. Handmade Poland; Smooth top with Crinkled 'Bumpy" Bottom. Very unique, I have searched past and present and cannot find anything like this . The curved edge is uneven. Sticker states Hand Made in Poland. Heavy Clear Glass. Measures 12 inches across. Holds 8 Oyster Half Shells plus deeper middle section. Very neat and modern looking piece, purchased at a very nice upscale estate sale.