1917, 6¢ red orange, horizontal pair. Tied by light red Registered handstamps on cover to New York City, matching "Urdashurst, N.Y., Registered, Sep 14, 1917" and same day New York receiving postmarks on reverse; cover with light crease and filing pinholes with one affecting right stamp, Fine, the earliest known usage of the 1917, 6¢ red orange, perf 11 unwatermarked issue; with 2006 P.S.E. certificate. Scott No. 506  Estimate $200 - 300. $0 (Image)