1919, 1¢ green, Offset imperf, two plate blocks of six, both with huge margins, left plate "9817" in emerald green, o.g., small inclusion in margin; and top plate "9951" in gray green, o.g., never hinged; Extremely Fine. Scott No. 531  $300. $0 (Image)

1919, 1¢ green, Offset imperf, horizontal strip of three, tied by "Brooklyn, N.Y. Appr 2, 1919" wavy machine cancel on cover to Philadelphia Pa., Very Fine; with 2006 A.P.S. certificate. Scott No. 531  Estimate $750 - 1,000. THE EARLIEST DOCUMENTED USE OF THE 1919 OFFSET IMPERFORATE ISSUE. $0 (Image)