If it were that or any other Radius card it would have "Radius" printed on the (missing on BUG)) three big ASICs near the DA-15 connector as is the case with the RasterOps logo on their custom chips. The BUG logo on the three custom ICs would make that the name of the company, not the name of the card. The three IC on the three cards (Radius included) ought to be RAMDAC for R,G & B Digital to Analog Conversion.
TattleTech will tell the tale.