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
中国古代瓦 (内訳)獣面文半瓦当、双龍文半瓦当、山形雲文半瓦当. . ColBase (National Museums of Japan).