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1975 Telecaster bass characteristics: Small logo with including one patent number and ® mark applied under the finish, Fender name imprinted non-reverse clover tuners with an ® mark and no rivet, bullet shaped truss rod adjustment, solid maple neck with skunk stripe, black plastic dot fret markers, medium jumbo fret wire, neck butt date etc. ink stamps, extra hole on neck butt for hanging while painting, 3 bolt F Series neck plate with tilt adjust, non-contoured slab body, neck pocket paint stick etc., extra body holes in neck pocket for hanging while painting, humbucker pickup (often ink date stamped), white/black/white vinyl pickguard with the volume and tone controls mounted directly onto it, metal foil ground shielding on pickguard horn underside, thumb rest above E string, chrome bridge cover with foam rubber string mute, flat top knobs, CTS potentiometers (one metal shaft and one plastic shaft), blue drop tone capacitor, metal foil ground shielding in pots cavity, plastic wiring, input jack cup, small slightly raised string grommets on body back, two saddle metal bridge, oval ground wire route underneath bridge, black tolex case with silver plastic logo.

Serial numbers ranged from roughly 589000 to 690000 although there are many overlapping exceptions. We've seen 1975 Tele basses numbered as low as 402150. For more precise dating, cross reference the serial number with the instrument's neck butt stamp, pickup stamp and potentiometer codes.