We have a certain customer that is, shall we say, "specific" about his Jazzmaster™ tones, (Hi Anthony!) He recommended we research the 1963 black bobbin pickups as one of the "holy grail" pickup sets. After doing a lot of research, we narrowed down the wind recipe and prefered magnets to AlNiCo 2 and about 8k in the neck and 8.5-8.7k in the bridge. Then we happened to ask Mike Adams (Puisheen), what his ideal Jazzmaster pickup would be and he said, "AlNiCo 2 magnets with 8k neck and 8.7k bridge.
So that's what we made.
This set is reverse wound, reverse polarity for hum cancellation in the middle position.