Fire-King milk glass mixing bowls

Opaque white “milk glass.” Maker’s Mark: One bowl shows “Heat Proof – F inside a shield – USA”, which is an early Fire-King mark (used roughly 1940s–50s). Another bowl has “OVEN Fire-King WARE MADE IN USA”, which was used later (1950s–60s). The third bowl has faint lettering but looks consistent with Anchor Hocking production. Style: These plain white bowls are from the Fire-King “Nest Mixing Bowl Set”, which originally came in sets of four bowls that nested inside one another. You currently have three of them.