H405.  Another Holbrook tsuba: “Ko Tosho, Gourd Sukashi, Muromachi”.  8.4 x 8.5 x .3 cm (thin plate).  The nakago hitsu-ana is .8 x 3 cm.  Prominent tekkotsu on the rim and vigorous tsuchime (hammer work) on the plate.  Great condition.  $175.