The Combined Nomenclature (CN), v1:2021
education or exhibitions, unsuitable for other uses (excl. ground flying trainers of heading 8805, collectors' pieces of heading 9705, antiques of an age
https://www.dst.dk/en/Statistik/dokumentation/nomenklaturer/kn?id=49fd4a4b-3be3-4389-9b78-b2a56918d44c