T415.  Iron tsuba: waves and Torii.  6.4 x 6.6 x .45 cm.  Tha nakago hitsu-ana is.7 x 2.2 cm.  I can’t guarantee that this is a genuine Yagyu tsuba but I do know that the design is Yagyu.  I’m including 3 pictures of this tsuba next to similar pieces in The Haynes Yagyu Design Book.  Condition is excellent with a nice, soft patina.  If you buy this and get a paper to Yagyu you’ve hit a home run.  $595.