If anyone is interested. I have put a Voodoo 5 500 agp on ebay, it is missing its mounting bracket, but working ok.
http://www.ebay.co.uk/itm/232087080456?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649
http://www.ebay.co.uk/itm/232087080456?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649