Large, bold ink signature, “Dali, 1955,” on the reverse of a 6.5 x 5.25 printed invitation for an exhibition of sculptured jewels by Dali at the Philadelphia Museum of Art on January 14, 1955. In very good condition, with heavy crease just touching bottom edge of date, light toning to printed side, and faint spotting and soiling to signature side. R&R COA.