The iron sword of Inariyama Kofun
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The iron sword of Inariyama Kofun(ja: Inariyama Kofun Shutsudo Tekken稲荷山古墳出土鉄剣 or Kinsakumei Tekken金錯銘鉄剣) is a sword uncovered from Inariyama Kofun, the second biggest tombs of Sakitama ancient tombs area located in Saitama Prefecture of Japan. The sword unearthed in 1968 is one of the national treasures of Japan. In 1978, the X-ray analysis revealed inscription consists of no less than 115 characters, which was described to be "discovery of the century" for studies of Japanese ancient history.