Vintage SARKES TARZIAN models 702-501, 702-502, 702-503, and 702-504 4-tube FM Stereo Multiplex Companion Unit. Original old Sams Photofact manual includes schematic, parts layout, voltage/resistance test charts, repair parts list and description. 4 pages. Manufactured by Sarkes Tarzian Company, of Bloomington, IN. Dated 6-1963. This manual would make a sensational accompaniment to your retro audio equipment.