5c Carmine, Imperforate, Error
(485). Mint N.H. double error in block of 70, sheet margin at
left and top each with plate no. 7942 and full guideline at bottom, large
margin at right, fresh colorEXTREMELY FINE GEM. AN OUTSTANDING EXAMPLE OF THE 5-CENT IMPERFORATE ERROR, OF WHICH LESS THAN 50 SHEETS WERE RELEASED TO THE PUBLIC.
During the course of production of the normal 2c plate No. 7942, three positions were noted to be defective. The plate was sent back to the siderographer, who burnished out the three positions and mistakenly re-entered them using a transfer roll for the 5c stamp. The error passed unnoticed and the sheets were issued to the public both Perf 10, Imperforate and Perf 11 (Scott 467, 485 and 505).The imperforate is by far the rarest of the three.
With 1999 P.F. certificate (Image)