INVERTED OVERPRINTS, B13/B14, B15/B16, B19/B20 (3 Diff. Pairs), Each Pair with "Stolow" Back Stamp, Plus a B15/B16 Pair with Double Overprint, All Sound Cond., OG, MNH, F-VF, Errors Not Listed by "Scott" (1958 Issue) (Image)

80.00