OP; The photo indicates its been screwed with by an idiot (sorry). First the threads look like they have been filed off so the steerer will fit through the top nut...which it normally would not at all. And suspect the top nut has also been enlarged for this reason also. Overall looks like someone wrecked the bike killing the fork and just found something to jam into it so he could sell it off as he clrearly had few clues as to how to install a fork correctly. Be suspect that the frame may have damage also. Hopefully you got it for a really low price...