It's an ASUS 7100 pro AGP 64meg GF2mx graphics card. It works unflashed out of the box on any G4 machine as far as I can tell, possible even a cube (although you'd probably want to bring the sucker over and test to see it fits before you bought the card).
Selling it for $160, email me at [EMAIL PROTECTED] if you're interested. Cheers, Tobes.