Rousseau - I was way off. 9 speed hubs in that style were sold in 97 and 98 and were titanium. In 99 Campy went to the aluminum axle Record hubs. So you have a 97 or 98 hub which has the titanium bits (axle and freehub inner). The only other small possibility is that someone took a 96 or earlier 8 speed hub and fitted a 9s freewheel body. I know this was possible in some configurations, but probably prohibitively expensive unless stuff was just laying around.