Vintage ARVIN models 544 and 544A (Chassis RE-201) 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. Noblitt-Sparks Industries of Columbus, IN. This manual would make a sensational accompaniment to your classic retro radio equipment.