four-ply brown "tortoise shell" pickguard was used. A thicker, ‘slab’ fingerboard was used from introduction in 1958 until mid-1962. From mid-1962 on, a thinner, 'veneer' fingerboard was used. An optional maple fingerboard was briefly offered in the mid-1970s. Binding was added to the Jazzmaster fretboard in 1965. In 1965, clay dot fingerboard markers were changed to pearloid; in 1966 the dot markers were replaced by pearloid blocks. Black binding and blocks were used on Jazzmasters that were optioned with maple fingerboards. radius fingerboard with 21 frets. This remained unchanged until 1980. In 1965, Kluson tuners were replaced by Fender "F" tuners. Some CBS Jazzmasters were equipped with Grover tuners that had pearloid buttons. A transition logo, with a larger "Fender" font, was used starting in 1965. This was replaced in 1967 by the black CBS logo, with "Fender Jazzmaster" in large, bold lettering. Finishes were nitrocellulose lacquer from 1958 to 1967, switching to polyester finishes in 1968. The headstock remained unchanged from 1958 to 1967. In mid-1967, the headstock was changed from the original Jazzmaster shape to the same, larger "CBS" style headstock that was used on the Stratocaster. Wiring transitioned from cloth to plastic in 1968. Potting of pickups became inconsistent after the CBS purchase in 1965. By the mid-1960s, the one- and two-piece ash and alder bodies were supplemented by three- and four-piece bodies. The Jazzmaster was spared the change to the 3-bolt neck that was implemented on the Stratocaster. From 1968 until the model was discontinued in 1980, it remained largely unchanged. Discontinuation and resurgence After years of dwindling sales, with instruments being pieced together from leftover factory stock, the Jazzmaster was officially discontinued in September 1980, but has since then been re-released in many forms and modifications. The Jazzmaster was re-introduced in 1986 as a 1962 reissue model from Fender's Japanese factory, with a 1966 model existing parallel to it (with block inlays and binding, but paired with a small pre-CBS headstock). The American Vintage Series version was introduced in 1999, also based on the 1962 model. In 2007 Fender released a 'thin skin' Jazzmaster reissue with thinner vintage nitrocellulose finish. The 1962 model was discontinued in favour of a 1965 model which was equipped with a bound neck and a veneer fretboard when the American Vintage Series were revamped in 2012. Given the recent resurgence in popularity of these Fender offset models, Fender revamped their