Tim shaw was a Gibson employee who was tasked with creating a PAF replica at the end of 70s. First official appearance in Les Paul Heritage series after May 1980 but some lucky guys found them already installed on Les Paul Standard at the beginning of 1980. DCR around 7.3, penny copper colored wire on the bobbins, white plastic spacers, base plates embossed with patent number same as the later T-tops but with an ink stamped code, black and white lead wires coming from the bobbins and UOA5 magnets. They became the main pickups Gibson used from 1980 till 1988 (when they were replaced by Bill Lawrence HB-R, HB-L)