Rare stunning French factory Industrial adult head mold. This is a young woman's head. It was probably made for an advertisement figure of some sort or was used as model parts. The mold is made of copper and has a (Made in France) reverse tag in the inside (check the picture). Rubber or plastic resin would be poured into the opening and the flexible rubber would be pulled out from the same opening. Wonderful oxidized patina and layered surface from exposure to various chemicals and high heat during the manufacturing process. Perfect for any cabinet of curiosities.