These are exceptionally nice, white egg shells from domesticated ostriches raised on ranches in South Africa. Each egg shell has been drained (there is a small hole at the bottom), cleaned, and disinfected with a 5% solution of formalin. The shells are about 5" to 6" tall and 14" in circumference on average.
Ostriches are ranch raised in South Africa and are not endangered.
A USFWS export permit is required for all shipments outside the USA.