These 1960's coffee cups were made during the height of the Melmac / Melamine era and were often used along with the other plastics. The lack of manufacturer's mark often leads to confusion as to whether to call them Raffiaware, Melmac, Lucite or Melamine.
Each mug has a clear exterior (possibly Lucite )that protects a layer of burlap or raffia. The inside of the mugs appears to be of the Melmac or Melamine family of plastics. These came in a rainbow of colors--often pastels like these. The colors often reminded me of ice cream flavors (like these four colors) : Mint Green, Orange Sherbet, Chocolate Brown and Lemon Yellow.
The mugs are 3 3/4" tall with a wide mouth and taper towards the bottom. These are in great condition without chips, cracks, or stains and continue to have their shiny surface.
Perfectly fun for a picnic, campsite, RV, or Beach House!
Now also at brick and mortar store: Leonardtown Maryland Antique Center
If in Maryland; visit me at Leonardtown Maryland Antique Center. Welcome FALL!