I have a pair of my beloved 6000s up for sale - they are 2004 models (serial no. 18xx) and are finished in Alu/Silver frets.
Condition is fantastic - they are not unmarked and have one or two light scratches and the frets have a few pulls but i'm being very honest and probably overly picky regarding their condition. I would rate them as 9/10 easy.
Looking for £600 cash on collection from Birmingham for forum members, will Ebay next week if no interest on the forum. Call me on 07748900832 for more info.