Beckmann Taubstumme 1921 Pencil on paper laid down on paper 10 'A by 7 3/8 inches Sotheby's estimate: $50,000 -70,000 Leon's tax cost: $84,435 Juan Gris Nature morte a Jo cafetiere 1917 Pencil and charcoal on paper 18 7/8 by 12 5/8 inches Sotheby's estimate: $300,000 -500,000 Leon's tax cost: $1