Very vintage 1940’s Primary Blue Pyrex Refrigerator Dish (Model 502-B). This is a rectangular milk glass “Fridgie” Refrigerator storage container made by Corning Glass Works in the early 1940’s-1950s. Pyrex Ribbed Lid 502-C comes with it. Capacity 1 1/2 pints (almost 3 cups). Beautiful primary blue exterior coating with classic milk glass white interior and rounded corners designed to stack or fit efficiently in a refrigerator. Back embossed Brandstamp indicates 502-B T.M.REG PYREX A-27 (Mold#) MADE IN USA T T T in an arc underneath. Glass Lid in tact. It is not the original mate lid to this dish it came from another piece. It is a little cloudy. The dish is in great condition. No chips the blue still shiny has been hand washed no color fade.