T369.  Iron sukashi tsuba, likely Kanayama School.  7.5 x 7.5 x .55 cm.  The nakago hitsu-ana is .7 x 2.3 cm.  This was given to Kanayama by the person I bought it from and I see no reason to argue.  Condition is excellent and there are prominent tekkotsu covering the rim.  The tsuba is accompianied by a box that it has sat in for some time (it has left its marks on the cloth).  $350.