Vintage MOTOROLA models X37B, X37E and X37S (chassis HS-1005). battery operated 6 transistor portable AM radio receiver. Original old Sams Photofact manual includes schematic, parts layout, alignment instructions, dial cord stringing, voltage & resistance test chart, repair parts list and description. 4 pages. Dated 3-1963. This manual would make a sensational accompaniment to your retro audio equipment.