mint pane of 100, varieties including "C A" of "Canal" widely spaced and "1" of "1 ct." dropped at position 50 (16b.1), "Canal" 13¼ mm long and 1 ct. properly aligned at position 100 (16b.4), "1 ct." narrowly spaced at positions 1 and 51 (16b.5), "1 ct." narrowly spaced and "N" inverted in left "Panama" at positions 2 and 52 (16b.6), work-up after "1" of "1 ct." at position 78 (16b.7), "P A" of right "Panama" widely spaced at position 49 (16b.9), and third "A" of left "Panama" is inverted "V" at positions 7 and 57 (16b.10), interleaving attached, fine and scarce as a full sheet