mint pane of 100, varieties including "Z O" of "Zone" widely spaced at positions 36 and 86 (16a.2), "1 ct." narrowly spaced at positions 49 and 99 (16a.3), "ct" and "." narrowly spaced at positions 41 and 91 (16a.4), and flat top of third "A" of left "Panama" at positions 32 and 82 (16a.7), few hinge remnants and small faults to selvage and bottom right stamp, fine and scarce as a full sheet