Anchor Hocking Colonial Lady clear glass snack plate/tray.
It features a distinctive mid-century modern design with a raised "circles" or "bubbles" pattern on the underside.
The plate has scalloped, ribbed edges and built-in tab handles on each end.
There is a large raised circle impression in the corner designed to hold a matching teacup.
These items were typically sold as part of an 8-piece "Serva-Snack" set in the 1950s and 1960s.

No chips or cracks, almost a complete set. 8 trays. 7 cups.