where it will be available for display as appropriate and made available for research. (2) Sense of Congress It is the sense of Congress that the Smithsonian Institution should make the gold medal received under paragraph (1) available for display elsewhere, particularly at other appropriate locations associated with Gold Star Families. (d) Duplicate medals (1) In general Under regulations that the Secretary may promulgate, the Secretary may strike and sell duplicates in bronze of the gold medal struck under this Act, at a price sufficient to cover the costs of the medals, including labor, materials, dies, use of machinery, and overhead expenses. (2) Proceeds of sales The amounts received from the sale of duplicate medals under paragraph (1) shall be deposited in the United States Mint Public Enterprise Fund. 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.