This is a set of 2 manuals for the NEC PC-8801A computer system. One is the basic user's guide for the PC-8801A and the second is the N-BASIC reference manual manual which includes both PC-8001 and PC-8801 BASIC commands. The N-BASIC manual is in very good condition. The user's manual has some turned up corners on the upper-right. These can be seen in the photos. There is no writing or marking in either of the manuals. I am the original owner of these manuals.