In the literature, hosonaga and casing of it with detailed description are shown in the column of the birth of the Emperor Gofushimi's Princess Junshi in "Entairyaku"(Diary of Kinkata TOIN).
文献上は、『園太暦』の後伏見天皇皇女珣子内親王誕生の記事に、これを収めた箱とともに詳細な記録がある。