Canal Zone, 1906, 8¢ on 50c bister brown. In combination with 1906, 1c on 20c violet, two singles + 2c on 1p lake on registered corner card cover to New Jersey, "Sta. A. Ancon, C.Z., Registered, Apr 26, 1906" oval postmark and matching registry etiquette, Very Fine. Scott No. 16+17+19  Estimate $300 - 400. $0 (Image)

Canal Zone, 1906, 8¢ on 50c bister brown. In combination with 1906-07, 2c red & black, tied on registered corner card cover to New York by magenta "Sta. A. Ancon, C.Z./Registered/Dec 14, 1906" oval postmark and black bar cancel, Very Fine. Scott No. 20+23  Estimate $150 - 200. $0 (Image)

Canal Zone, 1906, 8¢ on 50c bister brown. In combination with 1906-07, 2c red & black, vert. pair tied by target cancels on cover to New Brunswick, N.J., magenta "Sta. A, Ancon, C.Z./Dec 18, 1906/Registered" postmark, Very Fine; with 2000 P.F. certificate. Scott No. 20+23  Estimate $150 - 200. $0 (Image)