 Some of these models are designed to be near-exact replicas of a noted player's trademark instrument - including the "relic" treatment and the various degrees of ageing (patterns of wear, modifications, stickers and abuse) - such as in the case of the Jeff Beck Tribute Esquire, the Jaco Pastorius ersatz fretless Jazz Bass, and a replica model of Stevie Ray Vaughan's heavily weathered trademark Stratocaster.These models are meticulously crafted by hand, under the supervision of one luthier as opposed to part of an assembly line.Fender makes this distinction by tagging these models as 'Master Built' and 'Team Built'.