1980 RICKENBACKER 4001-S BASS
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1980 4001-S features include: Cresting wave shaped headstock, Kluson riveted tuners with phillips head screws, black plastic tuner bushings, raised logo on white or black plastic truss rod cover (plexiglass on left handed models), 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 or black pickguard, black heptagonal shaped knobs with words on silver tops, CTS potentiometers, yellow capacitors, plastic wiring, 3 way pickup toggle switch, chrome bridge assembly including mutes, mono input jack plate, black case with blue interior.
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 1980 Rickenbacker serial numbers are:
| TA 13x | 1980 January |
| TB 57x | 1980 February |
| TC 12xx | 1980 March |
| TD 148x | 1980 April |
| TE 204x | 1980 May |
| TF 252x | 1980 June |
| TG 313x | 1980 July |
| TH 343xx | 1980 August |
| TI 380x | 1980 September |
| TJ 442x | 1980 October |
| TK 451x | 1980 November |
| TL xxxx | 1980 December |