Canal Zone, 1926, $1 Violet Brown, Sharp "A", well centered, tied by "Balboa Heights, Canal Zone. Jan 20, 1927" cds on registered airmail cover to Westerville, Ohio, reverse with New Orleans (1.27) and Westerville (1.29) cds, Very Fine, A rare use of the 1926 $1 issue, of which only a handful are known. Scott No. 95  Estimate $400 - 600. $0 (Image)