A box called 'Kingin sounryumon dosei kyobako' (金銀荘雲龍文銅製経箱) is a kyobako that contained Heike-nokyo, and it was created and handed down to Itsukushima-jinja Shrine as a treasures of the shrine in the latter half of the 12th century; it is designated as a national treasure.
平家納経を納めた経箱「金銀荘雲龍文銅製経箱」は、厳島神社の社宝として伝わった12世紀後半の作で、国宝に指定されている。