VERY FINE AND EXCEEDINGLY RARE. OUR CENSUS RECORDS ONLY TWELVE UNUSED PAIRS AND ONE UNUSED SINGLE. A REMARKABLY CHOICE PAIR OF ONE OF THE RAREST STAMPS OF TWENTIETH CENTURY PHILATELY.
Armstrong, in his book United States Coil Issues 1906-38, recorded 33 stamps in total certified by the Philatelic Foundation. Our census of Scott 316 (see Appendix, p. 384) records twelve unused pairs and an unused single, for a total of 25 stamps. Armstrong probably double-counted a few pairs that were certified more than once. In addition, the strip of four in his notes has since been broken into two pairs, and the strip of three has been broken into a pair and a single.
Of the other similarly well-centered pairs, only three others are sound (Census Nos. 316-OG-PR-03, 316-OG-PR-03 and 316-OG-LP-07).
Census No. 316-OG-PR-01. Ex Engel as part of a strip of three, ex McNall as a pair. With 1961 P.F. certificate as the strip and 1992 P.F. certificate as a pair