Lot 1. MASTER OF THE SAN BARTOLOMEO TRIPTYCH ACTIVE IN URBINO AT THE END OF THE 14TH CENTURY AND EARLY 15TH CENTURY THE BETRAYAL OF CHRIST tempera on panel, gold ground 7 1/2  by 9 1/2  in.; 19 by 24 cm. Estimate: $70,000-90,000. (click on image to enlarge)