A well forged, handsome mokume tsuba in mokko-gata form with katakiri-bori landscape decoration on both the omote and ura. The mokume grain is large and well controlled reminding one of ayasugi hada. In fact, this tsuba is indeed a tosho (swordsmith's) tsuba, being made by [Kai Ju] Kiyonaga and dated the third year of Bunkyo (1863) believed to be the same as KIY 298 referenced in Hawley's, Japanese Swordsmiths. Our angled, side view photographs more accurately portray patina and color as well as the mokume grain. Good condition. 3 5/8 inches (8.4 cm) X 3 3/8 inches (8.1 cm) and 7/32 inches thick (.55 cm) at the raised mimi and about 1/8 inch (.32 cm) thick at the seppa-dai. The raised mimi and no taper across the plate are atypical of traditional tosho tsuba. But the present example being 19th century, and toward the end of the Edo period, allows latitude for creativity. Ex Arnold Frenzel collection. If both sensitivity and strength are conveyed in the smith's blades as they are in this tsuba, I would be tempted to acquire one of his swords.