I have had this old bass body for awhile and I'm going to restore it, but want to get rid of these pickups that are in it. I couldn't find much info online about them but here is what I found from the Seymour Duncan Website:
"Functions of switches on old-style "Active EQ" bass pickups
We stopped making the switch pickups ("Active EQ") in the mid-'90s. We replaced them with the Pro-Active? series.
The little rocker switches on the Active EQ pickups change the sound. Switch #1 shifts the coil resonance. On a Jazz Bass? neck pickup and a P Bass? pickup, the resonance moves downward from 22 KHz to 6.4 KHz. On a Jazz Bass bridge pickup, it move downwards from 17 KHz to 4.9 KHz. The effect is to give a more focused sound with a harder attack. Switch #2 gives a broad band bass boost of 4 dB for the Jazz Bass neck and P Bass pickups, and 5 dB for the Jazz Bass bridge. The switches can be a very effective tool for changing the tonal "character" of your instrument."
They sounded really good from what I remember, but hadn't plugged them up in about 10 years and don't really have any way to test them out cause the neck got lost in my many moves. I did plug it in and tap on them so I know they still work.
If anyone else has any info on these unique'ish pickups, please chime in. I guess lets say $40 shipped. Paypal cool. here are the best pics I could get of them.
Also, I can take them out of the body tomorrow and get model/serial numbers off the back as well. Thanks!!