(1) In general Following the award of the gold medal under subsection (a), the gold medal shall be given to the Smithsonian Institution, where it shall 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 the service of the Hmong people in the Vietnam war, and that preference should be given to locations affiliated with the Smithsonian Institution. 4. Duplicate medals The Secretary may strike and sell duplicates in bronze of the gold medal struck under section 3, at a price sufficient to cover the costs of the medals, including labor, materials, dies, use of machinery, and overhead expenses. 5. Status of medals (a) National medals The medals struck pursuant to 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.