My item dissapeared, help!

5 mim ago
when i trade with my friend
i show him my bb
and i take back to vault, and press ok
when i see my vault my bb is gone
This is my best weapon:
BB+13+edr+id2%
i make it by DM coin request for +id2% at 15/march/09
http://diablo-network.com/forum/showthread.php?t=8518
I dont have SS of this item, but with this link u know i have it!!!
I dont trade or give for golin, or sell shop. But this dissapeared, i dont fake (i know the rule!).
i only have SS when it dissapeared, for time and server.
http://img23.imageshack.us/img23/2402/screen032201430000.jpg
In my vault now only 1 bb (+13+L+edr), dissapeared 1bb(+13+edr+id2%)
My friend name KsVigoss

Thanks!