Help identifying unknown Mac SE accelerator

[Josh Dersch]

Scrounged a Mac SE motherboard+accelerator from a parts bin at RE-PC 
this afternoon and I'm trying to figure out what it is.  Unfortunately 
it looks like a few parts have been scavenged (a crystal oscillator and 
a few chips, plus the 68030+FPU) and there's a loose wire on the underside.

I can't find any markings that give away its identity.  I have a few 
pictures up at http://yahozna.dyndns.org/scratch/mysterymac/.  Anyone 
have any ideas?

Thanks,
Josh