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1961 Ric 4000 features: cresting wave shaped headstock with walnut wings, Kluson "long neck" riveted tuners, plexiglass truss rod cover with logo but no model name, striped nut, full width neck through body design with no skunk stripe, 20 frets, dot fret markers, no binding, gold painted pickguard, clear plexiglass thumb rest, horseshoe shaped bridge pickup with chrome surround, two chrome knobs, guitar bridge assembly including metal stamped serial number, chrome bridge cover with foam mute, clear plexiglass bridge cover guides, mono input jack plate, silver Tolex case.

1961 Rickenbacker serial numbers were preceded by the letter "A". An example of a 1961 Rickenbacker serial number is A4x.