This is an AR Turntable Model XAU vintage from 1972 with a serial number 111767. Acoustic Research made few models of the XA version, this one is the XAU version, which was made as the Universal model. It is convertible to 110V 60hZ or 220V 50hZ. The Audiogon Blue Book value is $430.00 without cartridge. I've own this since 1977 and I had it put away. I have too many turntables and I need to make room. The item is in very good condition; only a couple of tiny marks. The tonearm and the platter are very clean and shiny look, the wood base is in beautiful condition. The dust cover is in OK shape with some tiny marks or scratches. I replaced the tonearm rest to a later model one and it is very good and steady, unlike the original one which was made out of very thin plastic. I have never heard a bad AR XA turntable: no matter what cartridge you put on it is always sounds good. All functions are working very well. Currently I have mounted on a Shure M55E cartridge with excellent condition stylus and I am including it with sale of the turntable.