John Mayer’s 2004 Fender Stratocaster Custom Shop (Burgundy Mist)
This guitar is pretty much a mystery, although it is likely that it came out of the Fender Custom Shop on John’s order. It was used extensively during the Heavier Things tour in 2004 [03/12/2004 John Mayer- YouTube], and therefore likely served purely just as of a touring guitar.
By the looks of it, the guitar was based on an early 60s Stratocaster model. It features a rosewood fretboard on a maple neck, most likely an alder body finished in Burgundy Mist, aged mint-green pickguard, and the standard configuration of three single-coil pickups.