http://collections.mfa.org/internal/media/dispatcher/799602/resize%3Aformat%3Dfull;jsessionid=3601C136D6D4E2ED6D390447255DC04FTsuba in the form of a human skull18th century (?)Myōchin SchoolMain material: iron; other metals: copper sekigane; decorative technique: sukashi-boriArms and armor9.2000000000 Centimeter0.4000000000 Centimeterhttp://collections.mfa.org/objects/detailsrdf/13540;jsessionid=3601C136D6D4E2ED6D390447255DC04F