Canal Zone, 1976, 13¢ Dredge Cascadas. Tied by grid cancel on registered 1916 2¢ entire to Buffalo, N.Y., reverse with "Balboa, C.Z., Registered, Dec 1923" origin and various transit backstamps; light cover toning and reduced at left, F.-V.F. Scott No. 163+U2  Estimate $200 - 250. $0 (Image)