Vintage PYREX Nesting Mixing‎ Bowls Ovenware Primary Colors Made in USA

The Vintage PYREX Primary Colors Nesting Mixing Bowls are among the most iconic and beloved pieces of American kitchenware, first introduced in 1945 by Corning Glass Works. Made in the USA from durable opal glass, these bowls feature a vibrant color palette—yellow, green, red, and blue—and were designed to nest neatly inside one another for easy storage.  Each bowl is marked with its model number and capacity:  #401 (Blue) – 1.5 pint  #402 (Red) – 1.5 quart  #403 (Green) – 2.5 quart  #404 (Yellow) – 4 quart  These bowls were not only functional but also a cheerful staple in mid-century kitchens, and they've since become highly collectible for their nostalgic charm and sturdy craftsmanship.