15c Plane over New York, Horizontal Pair, Imperforate Between (C35a). Mint N.H. block of four, deep rich color, usual centering for this issue

FINE. A RARE BLOCK OF THE 15-CENT PLANE OVER NEW YORK IMPERFORATE BETWEEN ERROR. THIS IS THE FIRST BLOCK WE HAVE OFFERED SINCE KEEPING COMPUTERIZED RECORDS.

Only 20 pairs are reported in Datz.

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