; or (B) loan, as appropriate, so that the medal may be displayed elsewhere. 4. Duplicate medals The Secretary may strike and sell duplicates in bronze of the gold medal struck pursuant to section 3 under such regulations as the Secretary may prescribe, at a price sufficient to cover the cost thereof, including labor, materials, dies, use of machinery, and overhead expenses. 5. Status of medals (a) National medals The medals struck pursuant 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.