Thanks! I'm afraid I sculpted the mask myself out of ProCreate - I wish I had ten more of those heads myself now! The horns started life as a pair of narrow sword blades. I was trying to mimic the Nur-Ab-Sal imagery which is so prevalent in Indiana Jones and the FoA, a game which has become a very fond childhood memory for me.
I'd love to have the mask and horns be a running theme in multiple projects/settings of mine (swords-and-sorcery, VSF, 30s pulp, weird wars, retro sci-fi, etc) but it would require that I get into the casting business, for which I lack both the expertise and the budget. Ah well, maybe some day.