Vintage ZENITH models MM2670R, MM2670W, MM2675R and MM2685H (Chassis 8MT25, 10M9T25 and 10M9T25Z).  AC operated 10-tube, 9 transistor AM FM FM-Stereo, 8 transistor stereo amplifier, with 4 speed automatic record changer.

Original old Sams Photofact manual includes schematic, parts layout, alignment instructions, dial cord stringing, voltage & resistance test chart, repair parts list and description. 13 pages. Dated 7-1965. Manufactured by Zenith Radio Corp., of Chicago, IL. 

This manual would make a sensational accompaniment to your retro audio equipment.