The Combined Nomenclature (CN), v1:2023
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=6288e2f3-11bf-4206-90bf-a3b6f6ebbc4d