CANAL ZONE, 1904, 2c Rose, "Canal Zone" Inverted (1a). Horizontal pair from bottom row of sheet, used with 5c Blue with Diagonal "Canal Zone" (2d), each tied by "Canal Zone, Bohio, Jul. 8, 1904" circular datestamps and barred "Canal Zone" on Panama Railroad Company corner card cover to Cristobal, left 2c stamp with tear and cover opened roughly at left, Fine, believed to be the only known multiple of the 2c inverted overprint on cover, the used singles catalogue $2,400.00, ex Salz