A KOTŌ TACHI IN EFU DACHI MOUNTS Nambokuchō period (1333-1392) Of honzukuri, iorimune configuration with an extended kissaki and koshizori curvature, forged in ko-itame hada with a notare tempered edge, both sides chiseled with bōhi, the ō-suriage tang with two holes and later file marks, with a one-piece gilt-copper habaki chiseled with two views of a chrysanthemum blossom; the 18th-century efu dachi koshira-e comprising a gold nashiji saya decorated in gold hiramaki-e with lightning key-fret d