A clear glass lid for your vintage Pyrex 500 series 1-1/2 pint fridge dish number 502, which was the middle size dish in the set. It's the early style lid with narrow ribs on the long sides only, made only for the first couple of years (later refrigerator dishes came with fully ribbed lids).

The lid measures 4-1/4 by 6-3/4 inches. It will fit any vintage Pyrex colored 502 dish regardless of pattern, from the original 1947 Primary colors to the 1979 Autumn Harvest lines. The Oven to Refrigerator sets were all discontinued by Pyrex in 1981. There are no chips, cracks, or fleabites, just some very minimal marks from more than 70 years of use and storage.