T420.  Large iron tsuba with nunome zogan.  8.3 x 8.7 x .45 cm at the slightly raised rim.  The nakago hitsu-ana is .9 x 2.8 cm.  The dragons on the front put me in mind of Higo work.  Whatever this is, condition is excellent.  This is an impressive tsuba; I think you’ll be pleased.  $295.