6c Dark Blue & Carmine, Vertical Pair, Imperforate Horizontally (C23a). Pane of 50 with selvage on all sides, rich colors, containing 20 pairs of the error, intact plate block at top, stamps Mint N.H., small h.r. in top selvage where few perf separations sensibly reinforced, each stamp with pencil position no., few other perf separations, few natural gum wrinkles, pre-printing paperfold affects plate block and two other pairs, insignificant flaw in bottom selvage

FINE-VERY FINE APPEARANCE. A RARE INTACT PANE OF 50 OF THE 6-CENT EAGLE AND SHIELD AIR POST ISSUE IMPERFORATE HORIZONTALLY.

Datz states that 50 panes were discovered. Very few remain as intact panes.

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