This is a vintage 9-inch diameter clear glass Pyrex ribbed mixing bowl.

Glass mixing bowls, particularly those with ribbed designs, became popular in American households during the mid-20th century. Brands like Pyrex and Anchor Hocking were renowned for producing durable and functional kitchenware that was both affordable and aesthetically pleasing. These bowls were often used for mixing ingredients, serving food, and even for storage, making them a versatile staple in many kitchens. Their ribbed design not only added a decorative element but also provided a better grip for handling.

Pyrex, a brand of borosilicate glass bakeware and cookware, was introduced by Corning Glass Works in 1915. Anchor Hocking, another prominent American glassware manufacturer, also produced a wide array of kitchen items, including mixing bowls, often with similar ribbed patterns. These items are now collected by enthusiasts who appreciate their vintage charm, practicality, and the nostalgia they evoke of a bygone era in home entertaining and cooking.