D107.  Iron sukashi tsuba given to Ko Umtada by the person I bought it from.  6.5 x 6.9 x .4 cm.  The nakago hitsu-ana is .8 x 2.9 cm.  I have no reservations about the Ko Umetada call; everything seems to fit.  The iron is excellent with ample, small tekkotsu on the rim and a wonderful, soft patina.  Condition is great.  $175.