The very first humbucker and probably the most sought after pickup of all time, the PAF was invented by Seth Lover, then Gibson employee, as an answer to the problematic hum caused by single coils. Famously the de-facto pickup on Les Paul standards of that era, the PAF was the secret weapon to crush Fender.
PAF stands for “Patent Applied For”, as seen on the decal. Story goes that no PAF pickup sounds the same, but they all roar. This is probably due to the fact they were randomly stuffed with Alnico II, III, IV or V magnets. Modified patented versions were produced after 1962, marking the official end of the “Patent Applied For” era. Since then, countless reissues, clones and copies have been produced.