; (B) have a diameter of 1.500 inches; and (C) contain not less than 90 percent silver. (3) Half-dollar clad coins Not more than 300,000 half-dollar coins, each of which shall— (A) weigh 11.34 grams; (B) have a diameter of 1.205 inches; and (C) be minted to the specifications for half-dollar coins contained in section 5112(b) of title 31, United States Code. (4) Proof silver $1 coins Not more than 100,000 proof silver $1 coins, each of which shall— (A) weigh 5 ounces; (B) have a diameter of 3 inches; and (C) contain .999 fine silver. (b) Legal tender The coins minted under this Act shall be legal tender, as provided in section 5103 of title 31, United States Code. (c) Numismatic items For purposes of section 5134 of title 31, United States Code, all coins minted under this Act shall be considered to be numismatic items. (d) Mintage limit exception If the Secretary determines, based on independent, market-based research conducted by the U.S. Olympic and Paralympic Committee, that the mintage levels described in this section are not adequate to meet public demand, the Secretary may increase the mintage levels as the Secretary determines is necessary to meet public demand. 4. Design of coins (a) Design requirements (1) In general The design of the coins minted under this Act shall be emblematic of the participation of United States athletes in the LA28 Games. (2) Designation and inscriptions On each coin minted under this Act, there shall be— (A) a designation of the value of the coin; (B) an inscription of the year 2028 ; and (C) inscriptions of the words Liberty , In God We Trust , United States of America , and E Pluribus Unum . (3) Selection of designs The designs for the coins minted under this Act shall be— (A) selected by the Secretary after consultation with— (i) the United States Olympic and Paralympic Properties; and (ii) the Commission of Fine Arts