(Outgoing Philadelphia) 1879 Philadelphia, Pa. To Gabon, West Africa, double rate cover franked with 1879, 10¢ brown tied by "Philadelphia, Pa., May 28" cds and quarter cork duplex, blue Cherbourg transit cds and reverse with rare red boxed "Found open and resealed in F.B." handstamp applied at Philadelphia and receiving postmark; minor cover edge wear, still Very Fine. Scott No. 188  Estimate $400 - 600. $0 (Image)

(Outgoing Philadelphia) 1879 Philadelphia, Pa. To Gabon, West Africa, double rate cover franked with 1879, 10¢ brown tied by rimless "Philadelphia, Pa., Oct 24" cds and quarter cork duplex, reverse with French transit and receiving postmarks; stamp with s.e.'s at left and bottom, otherwise Very Fine. Scott No. 188  Estimate $300 - 400. $0 (Image)