Confederacy Camp Douglas, Prisoner's Letter, Examined. Partial blue oval handstamp on reverse of cover to Philadelphia, Pa., franked with U.S. 1861 3¢ rose (crease) tied by large blue grid cancel, matching "Chicago, Ill, Dec 9, 63" cds alongside, light cover soiling and reduced at left, Fine. Scott No. U.S. 65  Estimate $200 - 300. $0 (Image)