(Deemed the gold standard for vetting classical and modern art, deep knowledge of the artist's process — brushstroke, paint application, layering, rubbing, washing and so forth — were further supported by the new tools of x-ray fluorescence, infrared spectroscopy and x-radiography to more
precisely date paints, paper and canvas and assess structural integrity.
I can
date this picture
precisely to Rome, late October, 1975, when Warhol showed his Ladies and Gentlemen
paintings (aka Drag Queen
paintings) in Ferrara and then went to Rome for a show of his prints.