I have this pup that I pulled out of a guitar I got off the land of ebay a couple months back. It has a JBL sticker on the back but I don't guarantee that is what it is.
Anyway long story short, I think the screw coil is shot. When I first went to check it one of the lead wires was un-soldered...
JB humbucker is from 2003 and has been installed in same guitar since. Plenty of lead on it. Sounds great works perfectly.
Custom Custom trembucker is from late '80s in good shape sounds great. Not a lot of lead but probably enough for most guitars.
Looking to trade for other Duncan...
I ordered an ESP Eclipse solid body back in 1998 and was going to have it upgraded to the Duncan '59/JB option. The shop I was ordering from told me they could upgrade it cheaper with the same pups from there used stock so I said go for it. Got the guitar way back then and never gave it a second...