I found this on another site that the pickup Seymour Duncan wound for Van halen(early days) was the Duncan JB.Type in(search) "Ride the Seymour Duncan Special" and read the article.So all those other so called Van halen pickups like the 78,custom custom,evenly voiced harmonics,custom are basicly just money makers or what ever you want to call them" I found this as a interesting read.