Dating instrument medical power radiography source
A time lag of 2–5 y between the radiocarbon date and the date noted on the work of art is not uncommon (15).
Radiocarbon dating of the canvas gives a time frame of when the raw fiber material was harvested and generally has a few years offset with the actual completion of the work.
The triangle in continuous blue lines is a small extension of that loss to acquire a sample for the work reported here.
If possible, conservators sample from existing losses or damages.
Thus the additional dating of the paint reveals the forger’s scheme where the repainting of an appropriately aged canvas was used to convey the illusion of authenticity.
Art forgeries have existed since antiquity, but with the recent rapidly expanding commercialization of art, the approach to art authentication has demanded increasingly sophisticated detection schemes.