What were portrait masks for the mummies made out of?
World STudies - Cocoa, Thursday, November 15, 2007 at 5:49pm
they were made of plaster.
World STudies - Ms. Sue, Thursday, November 15, 2007 at 5:53pm
This site lists 6 or 8 different materials for portrait masks for mummies. Perhaps one of the most common was cartonnage.
Check this site for more details.