License, verbatimCC-BY
ColBase (National Institutes for Cultural Heritage, Japan): image published under Creative Commons Attribution 4.0 (CC BY 4.0), stated as schema:license on the item's own access record in Japan Search. Attribution required; terms: https://colbase.nich.go.jp/pages/term?locale=en
短刀 銘 備州長船藤原忠光 文明十二二年二月日 附赤木柄腰刀. . ColBase (National Museums of Japan).