I picked one up. Looks like a 50MHz 030 accelerator, based on Derrick Garbell's article here:

http://www.wap.org/journal/IIciwicked/default.html

I have the same card minus the large square chip just right of center of what's posted. I am guessing that the missing chip is the FPU. Are the drivers needed posted here:

http://daystar-tech.com/Daystar_Technology_Mac_Support/Daystar_Technology_Mac_Downloads/Daystar_Digital_Mac_Downloads/software/b_dsd_software_download1.html

Best,

John