Gibson part number 13671. The Marauder single coil back pickup, like the neck super humbucking front pickup, was designed by Bill Lawrence, however it was intended to be as tonally distinct from the neck pickup as possible. It was described as follows in the Gibson'78 publicity brochure: "the bridge pickup has a single iron-cored coil, with a magnet below and iron strips from the lower magnet pole". (According to Bill Lawrence's December 1975 article on pickups in Guitar Player, this design is similar to the Charlie Christian pickup created by Gibson in the 1930s). Early examples with clear casing allow us to see the pickup's structure quite clearly without disassembling. The pickup is potted, and any attempt to do this would be impossible without damaging the unit. You can just see the ends of the magnets (painted red) in the end view image below, with the coil sitting above them. Four iron strips act as a former, with no pole pieces in the coil's centre. From mid/late 1978, Marauders started appearing with opaque black covers, remaining like this until the end of production in the early 1980s.
The pickup is spring mounted directly to the scratchplate with three screws, allowing height adjustment, and alignment relative to the strings, with no additional mounting ring required.
Unusually for Gibson at this time, the Marauder bridge pickup was positioned slanted at clockwise 15° from the vertical, giving a sharper treble response. The Marauder was designed for any musical style, but Country was definitely up there - and the use of this single coil pickup was surely chosen to given it some Telecaster-type twang. Have a listen to this pickup on the 1974 Marauder publicity record here.
This pickup is has a typical DC resistance 2.3 kΩ
List of Gibson guitar pickups
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