This is a vintage, c. 1979 Sandwich Glass Museum postcard. Sandwich Glass was located in Cape Cod, Massachusetts. From the back of the postcard: This display of glass from the museum's collections illustrates examples of blown, overlay and cased, and stained glassware in assorted colors with wheel-cut decorations attributed to manufacture by The Boston and Sandwich Glass Company during the 1860's through the 1880's.
The postcard measures approximately 5 1/2 inches by 3 1/2 inches.
The postcard is in used condition as there is writing on the back and a postmark. Some minor wear on the edges.