Hey guys,
I have a used set of Bartolini's that came out of my Zon Sonus TJ6. They're a 12" radius, 4.450" x 1.185". I'm not sure if they are actually specifically made to Joe Zon's specifications or not, but the numbers do not match a specific Bartolini code, so likely they are. To me, they sound like a Bartolini dual, so you should be familiar with it.
I didn't get a chance to clean them off before I took a picture, but most of the markings you see on the top from the strings will come right off. These aren't very old- I took delivery of the bass in December 2006.
$140 shipped OBO to CONUS.
Thanks!