Technique: Oil painting on wood, preparation of white backgrounds in arti box. Casein substitute, plus a layer of hot-glued skin glue. Limited choice of very solid colors. Opaque, fixed to light, stable in mixtures, siccatives. The binder or medium added to the oil is turpentine from Venice. Pure larch resin which increases the hardness and solidity of the dough. Production time around 30 hours