1932, black error surcharge Correo Aereo. Interior 1922 (instead of 1932). Vale $0.25 over black ''1931'' on National Palace 25c dark brown, full OG, NH, VF and rare, the surcharge looks very well, but we did not find any records about this error, Est. $250-$300 (Image)

1935, National Palace and Cathedral with blue ''Resello 1935'' over official blue ''Deshon-Sevilla'' and black ''Correo Aereo Oficial'', 15c-1cor, complete set of five, full OG, NH, VF and very scarce in sound condition, C.v. $81 as hinged (Image)