BMF, guidance of 27 September 2022 – III C 2 – S 7246/19/10001:002
According to § 12 (2) no. 12 of the German VAT Law, inter alia the import of the items specified in Number 54 of Appendix 2 is subject to the reduced tax rate. This includes, in particular, collection items of numismatic value, namely coins and medals made of precious metals, if the assessment basis for the sales of these items is more than 250% of the metal value calculated on the basis of the fine weight without VAT.
Source KPMG
