The general collection of artifacts taken from the Hirabaru hokei shukobo (a burial mound surrounded by a square moat) in Fukuoka Prefecture (in the collection of the Agency for Cultural Affairs and under the care of the Itokoku Historical Museum in the city of Maebara)
福岡県平原方形周溝墓（ひらばるほうけいしゅうこうぼ）出土品一括（文化庁蔵、前原市・伊都国歴史博物館保管）