Please stop using vintage Pyrex glassware for cooking & serving food — it’s often coated with high-Lead paint & can test positive for Cadmium, Arsenic
“How much Lead is in my vintage Pyrex?” Here are pictures of each one I’ve tested, with links to test results.
Vintage Pyrex Casserole, “Shenandoah” Pattern c. 1981-1986: Yellow Exterior – 212,000 ppm Lead. 90 ppm is unsafe for kids.