1875, 5¢ blue. two covers both addressed the 1878 Exposition Universelle in Paris & postmarked on arrival by the rare blue boxed type handstamp "The Yale Lock Postal Bureau/Section des Etats Unis/Exposition Universelle/Paris 1878" (Bomar type P78-01), the first cover is franked with 5¢ Taylor & has the top left corner of the cover replaced & the 2nd is franked with 3¢ Bank Note pair with cover reduced into right stamp, Fine. Scott No. 179  Estimate $300 - 400. $0 (Image)

1875, 5¢ blue. Tied by Newburyport, Mass. cds on 1878 cover to the U.S. Commissioner of the 1878 Exposition Universelle in Paris, postmarked on arrival by the rare circular type handstamp "Yale Lock Manfg/Centennial Model Post Office" (Bomar type P78-02) & backstamped by French Exposition cancel, cover fault at bottom left, Fine. Scott No. 179  Estimate $200 - 300. $0 (Image)

1875, 5¢ blue. O.g., well centered, bright fresh color, Very Fine and choice; with 2004 P.F. certificate. Scott No. 179  $850. $0 (Image)

1875, 5¢ blue. Socked-on-the-nose New York town cancel, large margins, Very Fine and attractive. Scott No. 179  $25. $0 (Image)