I got it in February 2011 and it is the 1.86Ghz Core 2 Duo, 2GB RAM model. It has a total of 2 small nicks on the edges and the bottom feet are a little worn (understandably). I don't have the original box or anything else that it had come with, though, except the power cable. The battery is still a solid ~6 hours with OS X Mavericks. Would $600 be a stretch?