PUBLIC LAW 106-126—DEC. 6, 1999 113 STAT. 1645 (2) the Capitol building is now the greatest visible s3nnibol of representative democracy in the world; (3) the Capitol building has approximately 5,000,000 visitors annually and suffers from a lack of facilities necessary to properly serve them; (4) the Capitol building and persons within the Capitol have been provided with excellent security through the dedication and sacrifice of the United States Capitol Police; (5) Congress has appropriated $100,000,000, to be supplemented with private funds, to construct a Capitol Visitor Center to provide continued high security for the Capitol and enhance the educational experience of visitors to the Capitol; (6) Congress would like to offer the opportunity for all persons to voluntarily participate in raising funds for the Capitol Visitor Center; and (7) it is appropriate to authorize coins commemorating the first convening of the Congress in the Capitol building with proceeds from the sale of the coins, less expenses, being deposited for the United States Capitol Preservation Commission with the specific purpose of aiding in the construction, maintenance, and preservation of a Capitol Visitor Center, SEC. 203. COIN SPECIFICATIONS. (a) DENOMINATIONS.— The Secretary of the Treasury (hereafter in this title referred to as the "Secretary^') shall mint and issue the following coins under this title: (1) BIMETALLIC COINS.— Not more than 200,000 $10 bimetallic coins of gold and platinum, in accordance with such specifications as the Secretary determines to be appropriate. (2) $1 SILVER COINS.— Not more than 500,000 $1 coins, which shall— (A) weigh 26.73 grams; ij (B) have a diameter of 1.500 inches; and (C) contain 90 percent silver and 10 percent copper. (3) HALF DOLLAR. —Not more than 750,000 half dollar clad coins, each of which— (A) shall 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. (b) $5 GOLD COINS.— I f the Secretary determines that the minting and issuance of bimetallic coins under subsection (a)(1) is not feasible, the Secretary may mint and issue instead not more than 100,000 $5 coins, which shall— (1) weigh 8.359 grams; (2) have a diameter of 0.850 inches; and (3) contain 90 percent gold and 10 percent alloy. (c) LEGAL TENDER. — The coins minted under this title shall be legal tender, as provided in section 5103 of title 31, United States Code. SEC. 204. SOURCES OF BULLION. (a) PLATINUM AND GOLD.— The Secretary shall obtain platinum and gold for minting coins under this title from available sources. (b) SILVER.— The Secretary may obtain silver for minting coins under this title from stockpiles established under the Strategic and Critical Materials Stock Piling Act, and from other available sources.