T196.  Ko Kinko tsuba.  5.8 x 6.7 x .45 (on the fukurin) cm.  The nakago hitsu-ana is .7 x 2.9 cm.  This tsuba dates to the Momoyama or just at the beginning of Edo, possibly early work from Mino or Ko Kinko works fine also, yamagane or bronze, made in 3 layers (san mai awase) held together by rivets and the fukurin.    I think the animal on the waves is a fox but it may be something else.  Wonderful carving (the fox is quite playful) and great condition.  Also interesting for the punch marks on the seppa-dai, each of which is a different character and must have some meaning.  This one is special.  $425.