Tachi by Bizen Norimune

Ichimonji Norimune was a master swordsmith of the early Kamakura period in Bizen Province (present-day Okayama Prefecture), regarded as the founding figure of the Ichimonji school—a lineage that produced some of the finest blades in Japanese sword history. This tachi, approximately 79 centimeters long, exemplifies the classic early Kamakura form: broad width, deep curvature, and a thin cross-section combining to create a powerful, majestic silhouette. The hamon is the magnificent ō-chōji-midare (large clove-pattern irregular) that became synonymous with the Ichimonji name, with abundant ashi and yō patterning the tempered zone like a profusion of blooming flowers. The jigane shows a mixture of ko-itame and ō-itame grain with strongly distributed ji-nie, characteristic of Bizen province iron. Bearing the signature 'Norimune' on its tang, this tachi is acknowledged as a supreme technical achievement of the Ichimonji school and designated a National Treasure. Norimune's blades have consistently received the highest appraisal grades in Edo-period assessment documents, shining as the pinnacle of Bizen swordsmanship.