Small square white ceramic dish, no maker’s mark: Lead-free, Mercury Free, Arsenic-free, Cadmium-free.
1983 Made in England Royal Worcester Fine Bone China “Royal Garden Elgar”: 59,200 ppm Lead on the food surface (90 ppm & up is unsafe for kids).
Smiling Hill Farm Dairy (Maine) glass milk bottle by StanPac: Painted with green & black Lead paint (33,600 ppm Lead, 90 is unsafe).
China brands associated with “quality” aren’t necessarily safe. 2001 Lenox Butterfly Meadow pattern china: 63,700 ppm Lead.