T441.  Kinko or Ko-Kinko tsuba (how do we know the difference?).  6.3 x 6.8 x .3 cm.  The nakago hitsu-ana is.9 x 2.8 cm.  Amida rays and zig zag stippling on copper, yamagane, bronze, or something of the sort.  This has a fine, soft patina: quite nice.  $150.