This item is a vintage mid century modern Marshallan Products, Inc. "Parquet" 4-piece tray table set, model 5714/85, produced in Cleveland, Ohio. A set of four folding snack tables designed for portability and easy storage. One is on wheels so it can convert to hostess cart. Features a "parquet" style pattern on the tray surfaces. I could not find a date on the box anywhere, but it is likely from the late 1960s. Box is open and in decent shape, but it shows its age and has a few tears. However everything inside is still in the original plastic and the rubber ends/feet were never put on, so it appears to be brand new never used. See photos. 
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