By Farah Nayeri Pablo Picasso stands, cigarette in hand, gazing intently at the viewer. A white pocket square pokes out of his suit jacket; strands of hair reach up to the top of the canvas.

Authorities confiscated more than 70 fraudulent artworks falsely attributed to notable artists from Pissarro to Picasso, Rembrandt to Dora Maar, along with materials used to mimic vintage canvases ...