''Virgin of the Rocks'', unsigned, oil on canvas laid to canvas, 60.5'' H x 50'' W, est: $15,000/20,000
Note: The present work is a copy of Leonardo da Vinci's ''Virgin of the Rocks'' in the collection of the Louvre, Paris. This lot comes with a letter of authentication from Jack Wasserman attributing the piece to Marco d'Oggiono, dated August 5, 1980 Provenance: Private Collection, La Verne, CA

Visual: Craquelure throughout. Artist's pinholes along the upper edge. Long drips of varnish discoloration lower left. A 1'' x 1'' scattered area of paint loss, a 1'' line of paint loss and a 2'' line of paint loss lower right. Blacklight: Large areas of touch-up throughout including a vertical line of touch-up along the length of the canvas left center, a 3'' x 2.5'' 'H'-shaped area of touch-up left center with corresponding patch verso and a 1'' x 1'' area of touch-up lower right with corresponding patch verso.