Vintage Corelle Butterfly Gold glass plate: 18,700 ppm Lead on decorative pattern when tested with an XRF instrument
Vintage Corelle By Corning Butterfly Gold Pattern Glass Bowls: 23,300 ppm Lead [90 ppm is unsafe for kids.]
Vintage (c. 1972) “Butterfly Gold” Pyrex Casserole Dish: 87,000 ppm Lead. [Context: 90 ppm Lead is unsafe for kids.]
