Vintage Royal Doulton Bunnykins dishes are not safe for children to use. This dish tested positive for 80,000 ppm Lead & 1,916 ppm Arsenic. 90 ppm Lead (& up) is unsafe by modern standards.
1976 Bunnykins bowl: 59,000 ppm Lead. Anything above 90 ppm Lead is illegal in items made today for use by children.