VERY FINE APPEARANCE. AN EXTREMELY RARE MISPLACED PLATE NUMBER BOOKLET PANE OF THE 1902 ONE-CENT ISSUE. PERHAPS FIVE ARE KNOWN.
As discussed in an article in the U.S. Specialist (March 1998, pp. 129-130), this error resulted from the plate number being entered over the fifth stamp to the right of the central guide line rather than over the fourth stamp, as was normally the case. The proof sheet in the Smithsonian National Postal Museum for plate number 3472 demonstrates the error.