Postal Card, 1920, 1¢ on 2¢ Red on Cream, Die 2, entire, bright and very fresh, Extremely Fine, an exceptional example of this very rare experimental die surcharge issue, one of the rarest and most desired of all U.S. postal cards. UPSS No. S43. Scott No. UX31  $4,250. This experimental overprint prepared by the Universal Company and deemed to be unsatisfactory with only 2000-3000 were sold before being withdrawn. $0 (Image)