Katana (SFPP)
The “katana” is a Japanese long sword, dating from the 14th Century [Stone 339]; it had a small round hand-guard (tsuba) and a curved single-edged blade. We have no examples of its use in period heraldry or Mon; as an artifact from outside period Europe, use of the katana carries a step from period practice.
Tul Cyrdkatte bears: Per pale azure and sable, a katana inverted Or surmounted by a death’s head facing to dexter argent between in fess a sun Or and a decrescent argent.
Yamaguchi Yukio Matsutaro Futoshii no Suo bears as a badge: A katana fesswise reversed argent hilted sable.