Set of 4 well used and loved buying guides for stereo equipment from the early 1980's - years 1981,1982, 1983, and 1984. These were used for reference over many years. These are missing covers, much wear to spines, edges. Torn corners , though interior pages seem to be generally intact. I have taken a photo of the bottom corner of the 1981 edition that has the most creasing which may affect some of the bottom interior pages. Please examine the photos, they will indicate the condition.