This is a painted skull that was sent in to the Vancouver Police Department. It’s housed at the Vancouver Police Centennial Museum in Vancouver, B.C. Atlas Obscura doesn’t provide any additional details on the painted skull, but this is tantalizing:
Among its more curious exhibits are [… ] an exhibit of the police officers who have died in the line of duty since 1886, some fairly intense anatomical specimens left over from crime analysis, the “milkshake murderer exhibit,” and—in the behind-the-scenes area, which you can see on a tour—the “blood drying room.”
Photo Source: jiblite’s Flickr.