Vintage Pyrex Royal Blue divided casserole dish with gold medallion lid.

Pyrex, a brand of heat-resistant borosilicate glass bakeware, was introduced by Corning Glass Works in 1915. It quickly became a staple in American kitchens due to its durability, versatility, and attractive designs. Over the decades, Pyrex produced numerous patterns and colors, many of which are now highly sought after by collectors.

This particular casserole dish is likely from the "Horizon Blue" line, which was popular in the mid-20th century. The gold medallion pattern on the lid is a distinctive decorative element often found on Pyrex pieces from the 1960s and 1970s, adding a touch of retro charm to functional kitchenware.

Gold detail has some scratches.