To my eyes , that there mask sure looks like an item made from clay , considering that the marks i/s the mask are from clayworking (casting) tools .... while pressing/filling a clay mold ; which is just my 2 cents worth on this one , gerspee .
I sure could be wrong , but I think it's a fairly modern semi-mass 'shop produced' fired clay item , as in for the tourist/decoration trade .
... As in the image below , I can't always tell well from images , though ...