Vintage Radio Service Manual - SILVERTONE model 7210 (Chassis No. 101.820) 4-tube (battery operated) Superheterodyne AM radio receiver with combination phonograph record player. Manufactured by Sears, Roebuck & Company, of Chicago, IL. Dated 1948. 4 pages. Original old Sams Photofact manual includes schematic, layout, alignment instructions, voltage & resistance test chart, repair parts list and description. This manual would make a sensational accompaniment to your retro phono equipment.