1919, 1¢ gray green Offset, perf 12½, imperf vertically, block of four, guideline at right, choice centering, o.g., light vertical crease between stamps, Extremely Fine appearance; H F C(olman) handstamp guarantee. Scott No. 536a  $2,700 as two pairs. A RARE BLOCK CONTAINING TWO PAIRS OF THE 1919 1¢ OFFSET ISSUE IMPERFORATE HORIZONTALLY. $0 (Image)

1919, 1¢ gray green Offset, perf 12½, imperf vertically, horizontal pair, o.g., tiny hinge remnant, strong bright color, Post Office fresh, Extremely Fine, a rare and undercataloged variety; with 2011 P.F. certificate, Colman guarantee handstamp. Scott No. 536a  $1,250. $0 (Image)

1919, 1¢ Gray Green Offset, Perf 12½, Imperf Vertically, horizontal pair, o.g., very lightly hinged, strong bright color, Post Office fresh, Extremely Fine, a rare and undercataloged variety; with 2004 P.F. certificate, Colman guarantee handstamp. Scott No. 536a  $1,250. $0 (Image)