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Brokken concretie met fragmenten…
anonymous, 1700 - in or before 1743, concretionary stone, NG-1980-27-H-859-A
Gecorrodeerde spijkers met…
anonymous, 1700 - in or before 1743, concretionary stone, NG-2018-348
Zak met concretie met daarin…
anonymous, 1700 - in or before 1743, concretionary stone, NG-2018-463