1981 RICKENBACKER 4001-S BASS

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1981 4001-S features include: Cresting wave shaped headstock, Kluson riveted tuners with phillips head screws, black plastic bushings and shims under the tuner plates, raised logo on plastic truss rod cover, pearloid dot fret markers, glued in neck with skunk stripe, 20 frets, no binding, four pole neck pickup, four pole bridge pickup including cover and chrome surround, white pickguard, black heptagonal shaped knobs with words on silver tops, 3 way pickup toggle switch, chrome bridge assembly including mutes, mono input jack plate, black Tolex case.

The letters on the chrome input jack plate determine the year and month of production. The digits indicate the number of production. Some examples of 1981 Rickenbacker serial numbers are:

UA 43x 1981 January
UB 36x 1981 February
UC xxxx 1981 March
UD 145x 1981 April
UE xxxx 1981 May
UF 224x 1981 June
UG xxxx 1981 July
UH 280x 1981 August
UI xxxx 1981 September
UJ xxxx 1981 October
UK 407x 1981 November
UL xxxx 1981 December