1978 Rickenbacker 4001 Bass

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1978 Ric 4001 features include cresting wave shaped headstock, Kluson riveted tuners with slothead or phillips head screws, black plastic bushings and shims under the tuner plates, raised logo on plastic truss rod cover (plexiglass on left handed models), smaller triangle pearloid fret markers, neck through body design including skunk stripe, 20 frets or fretless option, white or black binding, four pole neck pickup, four pole bridge pickup including cover and chrome surround, white or black pickguard, heptagonal shaped knobs with silver top and lettering, CTS potentiometers, yellow capacitors, plastic wiring in control cavity, ric-o-sound input jack plate, pots cavity marking, 3 way pickup toggle switch, chrome bridge assembly including mutes, black Tolex case with blue, orange or black 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 1978 Rickenbacker serial numbers are:

RA 16x 1978 January
RB 83x 1978 February
RC 121x 1978 March
RD 204x 1978 April
RE 275x 1978 May
RF 362x 1978 June
RG 422x 1978 July
RH 434x 1978 August
RI xxxx 1978 September
RJ 589x 1978 October
RK 697x 1978 November
RL 708x 1978 December