VERY FINE APPEARANCE. AN EXTREMELY RARE EXAMPLE OF THE 4-CENT BLUE J. C. AYER & CO. ON EXPERIMENTAL SILK PAPER.
As an indication of rarity, none was offered in the Lilly or Joyce sales. It was first listed in the 1993 Scott U.S. Specialized, two years after the Joyce sale, with a dash for the price. It is also not mentioned in the 1994 Aldrich book. This is the first we have offered since keeping computerized records.
With 1985 P.F. certificate noting only a thin spot