Mark, stamped in black, lower left: ? Pen flourish, l.l. (Could this be the mark of collector, Pierre Crozat, 1661-1740?) In pen, on front of mount: Guido Reni In pencil, on front of mount: Reni and 1?32 In pen, on back of mount: No 5. ?Guido Reni Zeich? In pencil, on back of mount: Lot 94 and 15.