Group of Classic Errors. 1913-14, Eagle, 10pa green and gray, center and denomination is inverted (a common stamp is included), two inverted surcharges on Skaderbeg stamps 5pa/2q and 10pa/5q and in addition offset of surcharge 10pa on 5q, full OG or no gum as issued, F/VF, Est. $100-$150 (Image)