Fig. 7From: The young Van Dyck’s fingerprint: a technical approach to assess the authenticity of a disputed paintingRed drapery sample S2 from a dark fold of the red cloak: a cross-section under light microscope (DF, ×20) labeled with L1–L3 to indicate the three-layered stratigraphy; b EDX spectrum indicating the presence of Ca, Al, S along with P and K in the top glazing, the measuring position is indicated by a green box in (a)Back to article page