Vintage ZENITH models 6D014, 6D014W, 6D029 and 6D029G Superheterodyne 6 tube AM radio receiver. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test charts, repair parts list and description. Dated 1946. 4 pages. Zenith Radio Corporation of Chicago, IL. This manual would make a sensational accompaniment to your classic retro radio equipment.