Vintage ZENITH models L622, L622F, L622G and L622W (Ch. 6L03) 6 tube Superheterodyne AM radio receiver with electric clock. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test chart, repair parts list. 4 pages. Dated 1953. This manual would make a sensational accompaniment to your classic radio equipment.