Australia, Postage Due, 1937, 2d carmine & yellow green, left gutter imperforate, left gutter margin single imperforate between the stamp and gutter, o.g., lightly hinged, choice centering, Extremely Fine, a rare and attractive perforation error. ACSC No. D108b $1,000 ($620). SG No. D107 var.  Estimate $600 - 800. According to the A.C.S.C., three sheets were produced in this fashion with only 30 examples issued, of the surviving examples some have had the left most perforations trimmed. $0 (Image)