OEM manual. Please note that I have many other service manuals for electronics from the 1960s-80s available from other companies (Sony, Sharp, Panasonic, Fisher,...). Feel free to make a lower offer on several. Please see pictures to understand the condition of the manual. I try to take multiple high-quality pictures (rather than just using a stock photo) to give potential buyers an experience similar to holding the physical item. Any defects I notice will be captured in the pictures or explained below. Thanks for looking--let me know if you have any questions.