1873, 3¢ green, two horizontal pairs. Lightly canceled on cover to Stockholm, Sweden, indistinct origin date stamp & red "Chicago, Ill., Aug 27" exchange cds, stamps tied by "Hamburg, Franco" boxed date stamp, F.-V.F., a scarce double 6¢ rate to Sweden. Scott No. 158  Estimate $250 - 350. $0 (Image)