Vintage Phono Service Manual - SILVERTONE model 8144 (Chassis No. 431.199) 2-tube phonograph record player. Manufactured by Sears, Roebuck & Company, of Chicago, IL. Dated 1948. 2 pages. Original old Sams Photofact manual includes schematic, layout, voltage & resistance test chart, repair parts list and description. This manual would make a sensational accompaniment to your retro phono equipment.