John Mayer Signature Silver Sky (U.S. model, not SE). Excellent (virtually mint) condition. Includes PRS hard case-- a $200 value. I'll spare you the specs, but I will note this is the earlier model with the hotter pick-ups (closer to that of a '64 Strat) and the high gloss/metallic finish.
Paul Reed Smith and John Mayer collaborated on Silver Sky Signature, aiming to bring to market a modern, idealized version of a vintage single-coil guitar. Mayer and PRS were inspired by and tried to include their favorite elements from vintage instruments released in 1963 and 1964, like neck shape and radius. It also features a special inverted headstock to accommodate Mayer's playing style and keep consistent length of string behind the nut for better tuning consistency. The tuners are vintage-style and closed-back with PRS's locking design and it also features a trem arm and Gen III knife-edge screws.