This is a pickup base with 3 mounting lugs - different from the "Fender®" Version, but used on the Gibson® Sonex in the late 70s/80s, the Ibanez® AR Series around the same time and they're still in use on the Yamaha SA (and the old SG) Series.

A bit of an oddball frankly, and nowadays, seemingly only available in 52mm spacing (for the bobbin mounting screws) and obviously, no holes for pole screws - but honestly? If your ever confronted by a Sonex or a Yammy, this is about the best your going to get - atleast it gives you the scope for further modifications!

Available in 52mm, Brass or Nickel