A major painting by Titian is being put up for sale, and the National Gallery, which last year prevented Raphael’s Madonna of the Pinks from being purchased by a foreign bidder with an emergency infusion of cash from the government, hoped to do the same with the Titian. But the Heritage Lottery Fund, which grudgingly ponied up for the Raphael, calls the acquisition of art a “low priority.” Adding to the intrigue is the consenseus opinion of art experts that the Titian is a more significant work than the Raphael.