Sample of black paint from a Fifth Dynasty mastaba at Meidum belonging to Prince Nefermaat, son of King Sneferu. Described by Flaxman Spurrell as "lamp black" in reference to his 1895 experiments with colours from ancient Egypt. Previously sealed within two circular concave pieces of glass (watch glass) with a paper label annotated MEDUM IV Lamp black NEFERMAT”. Since 1976 displayed within a sealed acrylic cube.