1972 Rickenbacker 4000 Bass

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1972 Ric 4000 features: Cresting wave shaped headstock, Grover Imperial non-wavy tuners, plexiglass truss rod cover sometimes with logo and model name, dual truss rods, neck through body design with skunk stripe, 20 frets, dot fret markers, no binding, white pickguard, clear plexiglass thumb rest, four pole pickup including cover and chrome surround, two black heptagonal knobs, chrome "gaptooth" bridge including mutes, CTS potentiometers, yellow capacitor, a combination of cloth and plastic wiring, pots cavity marking, mono input jack plate, black case with blue or orange 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 1972 Rickenbacker serial numbers are:

LA 05x 1972 January
LB xxx 1972 February
LC xxx 1972 March
LD 38x 1972 April
LE 47x 1972 May
LF 56x 1972 June
LG 66x 1972 July
LH 87x 1972 August
LI xxx 1972 September
LJ 121x 1972 October
LK 141x 1972 November
LL xxx 1972 December