Vintage ZENITH models 6D015, 6D015Y and 6D030 (model 6C05 and 6C05Z) 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.