I was recently at a garage sale, and picked up a few sets of "collector" port from 1980ish, to celebrate the Centenary cricket tests between Australia and England. Anyway, one of the boxes has been signed, it seems, by the entire 1980 Australian cricket team. I figure if I can get it authenticated, it might be worth a bit. Any idea where I can go to get it authenticated, how much it'd generally cost, and if it would add to the value significantly, etc?
