United Airlines Serving white small tray/dish 2

Two United Airline serving dishes which are white pottery/ceramic marked on the bottom United Airlines PL 005 ABCO/DOVER. They both appear to be in excellent condition but are sold as USED and the bottom of one has more stain marks which probably could easily be removed with the modern cleaning supplies out on today's market. They measure approx 6 1/2 inches long by 4 1/2 inches wide, and 1 inch deep. I do not know the exact use of this tray maybe a sandwich tray or vegetable. Any questions please email me. Will charge $7.00 for packing in sturdy box with bubble wrap/peanuts to ensure quality delivery to your address PLUS ACTUAL POSTAGE.