The Art Newspaper reports on another Old Master sleeper:

A previously unknown Self-Portrait as Saint Catherine by the Italian Baroque painter Artemisia Gentileschi sold at Drouot in Paris on 19 December for an artist record of €2,360,600 (€1.850m at the hammer, against an estimate of €300,000-€400,000). The work, which dates from the same period (1614-16) as another Saint Catherine picture by the artist held by the Uffizi, was discovered by auctioneer Christophe Joron-Derem and presented in his sale of European paintings.

Newly discovered Artemisia Gentileschi painting sells for €2.4m at auction in Paris  (The Art Newspaper)