4 Pyrex Primary Color Nesting Bowls

A set of four American nesting mixing bowls in graduated sizes. Each bowl is constructed from opaque white borosilicate glass with a solid, fired-on exterior color finish in the classic primary color palette. The set includes a large yellow bowl, a medium-large green bowl, a medium-small red bowl, and a small blue bowl. The forms feature steep, rounded sides terminating in a subtle rim. Several marks are impressed in relief on the white circular bases of the bowls. The base of the blue bowl (image 3) is marked with the word PYREX centered above the number 401, with MADE IN U.S.A. appearing below. The red bowl (image 5) is marked PYREX centered above the number 402. The green bowl (image 6) has an impressed mark that is not legible. The yellow bowl (image 7) is marked PYREX centered above the number 404.