29c Fishing Flies, Horizontal Pair, Imperforate Between (2545b). Booklet pane of "six" with small part of seventh stamp, caused by foldover after perforating but before cutting, creating a top horizontal pair imperforate between, foldover resulted in heavy creases through the pair and small selvage tear above left stamp (reinforced) and slight gum disturbance, with original booklet covers

THIS IS THE UNIQUE LISTING EXAMPLE OF THIS DRAMATIC IMPERFORATE BETWEEN VARIETY. A GREAT RARITY OF BOOKLET PANE AND 20TH CENTURY ERROR COLLECTING.

With 2007 A.P.S. certificate not noting the creases and stating "never hinged". Illustrated in the Datz Catalogue of Errors on U.S. Postage Stamps. Accompanied by a Linn's Stamp News article describing the error. Listed in Datz and Scott but unpriced

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