Vintage ZENITH models 5D011 and 5D027 (Chassis 5C01 and 5C02) Superheterodyne 5 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.