Vintage platter from Sir George's Smorgasbord House, a popular buffet chain prominent in the 1960s and 1970s. Marking on the back indicates Shenango China, Pennsylvania company, with US patent number as well. It features a magenta band around the rim and a crest logo in the center. The player is in EUC. The only flaw was from the original manufacturer, on the printing on the center logo, the letter E appears as if their machinery slipped. No chips, no cracks, very cool collectible. Measurements in pictures. Have a blessed day!