17th century FRENCH SCHOOL The Holy Face with the crown of thorns. Oil on slate of octagonal shape (small scratches). H.: 30,6 cm - W.: 33,6 cm On painting on hard stone in France and Italy in the 17th century, slate, touchstone, marble, alabaster or lapis lazuli, see the catalogue of the exhibition Pietra Dipinta, Tresori nascoti del' 500 e del '600 da una collezione privata milanese (Mi_x0002_lan, Palazzo Reale, November 2000 - February 2001).

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