1912, 1¢ green, Shermack Type III and Privately Perforated 13, double perforations, tied by "New York, N.Y. Jan 15 1914" machine cancel on post card to Philadelphia Pa.; card creasing, Fine and exceptionally rare; with 1995 A.P.S. and 1998 P.S.E. certificates. Scott No. 408  Estimate $1,000 - 1,500. This item was illustrated and discussed in an article by Ken R. Lawrence in the September 1998 American Philatelist on page 824. It is hypothesized that the extra private 13 gauge perforations were most likely done for use in Mailometer equipment that had been altered to accept government coils. $0 (Image)