Lot
2111 
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.