Vintage MOTOROLA models SP52E, SP52N and SP511  AC operated 3-tube stereo amplifier with 4 speed automatic record changer. Original old Sams Photofact manual includes schematic, parts layout, voltage & resistance test chart, repair parts list and description. 2 pages. Dated 4-1964.  Supplied by  Motorola Inc, of Franklin Park, IL. This manual would make a sensational accompaniment to your retro phonograph equipment.