think its called a thunderclock ][
i also have apple ][ items i can trade
This is just my 2 cents, but I've found No Slot Clocks to be superior to Thunderclocks, as they don't take up a slot, work with ProDOS, and are compatible with not only Apple //e's but also //c's, and //c+'s.
Having said the above, I think I have a ThunderClock+ card and a TimeMaster][ card with which I'm willing to part. PM me with an offer if interested. As far as trades go, I'm looking for a Video Overlay Card, No Slot Clocks, Zip Chips, Apple //c memory expansions, SuperDrive Card Controllers & drive(s), and working copy of SAM, the Semi Automated Mouth (voice synthesizer). I'm open to other things as well, but I do have most all of the basics (in too much quantity).