under subsection (a) at a price sufficient to cover the costs of such duplicates, including labor, materials, dies, use of machinery, and overhead expenses. 5. Status of medals (a) National medals Medals struck under this Act are national medals for purposes of chapter 51 of title 31, United States Code. (b) Numismatic items For purposes of section 5134 of title 31, United States Code, all medals struck under this Act shall be considered to be numismatic items. 6. Authority to use fund amounts