Panel 3: 19th and 20th centuries

In this panel the underdrawing is made of charcoal (letter "A") and graphite (letter “E”).

Each pigment is presented in mixture with two binders: PVAc (column on the left) and linseed oil (column on the right).

The painted surface is divided into 3 stripes: the first 2 present 2 different finishings: terpene resin (stripe on the top) and acrylic resin (middle stripe). The third one is unprotected