18c Flag Over Lighthouse, Coil Pair, Imperforate Between (1891b).
Mint N.H. strip of three, completely imperforate between first and second stamp, blind perforations between second and third, miscut as are all known examples, fresh and Very Fine, an incredibly rare error of which only a few are believed to exist, noted as "very rare" in Datz, with 1989 P.F. certificate
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