In June, three skulls turned up in a donation bin at a Goodwill in Bellevue Washington and one wound up in a Goodwill in Austin, Texas. Of the ones in Bellevue, two were obviously prepared for medical classrooms; bleached and wired together. The third turned out to likely be of a Native American child from over 100 years ago. Authorities are still trying to find information that could aid them returning the child’s skull back to the tribe of origin for proper burial. Authorities in Austin believe the skull that showed up there was from a private collection. Foul play is not suspected in any of the cases.
Incidentally, if you wanted to buy or sell a human skull, Goodwill is not the place to go obviously.