Vintage ZENITH models J506G, J508B, J508BA, J508BC, J508P and J508W (Chassis 5F05). Original old Sams Photofact manual includes schematic, parts layout, voltage/resistance test chart, alignment info, repair parts list and description. 4 pages. Dated 6-1963. Manufactured by Zenith Radio Corp., of Chicago, IL. This manual would make a sensational accompaniment to your retro audio equipment.