2005 Marine Corps 230th Anniversary Silver Dollar Proof Mintage (max.): 600,000 Based on independent market research provided by the recipient organization (the Marine Corps Heritage Foundation), the Secretary exercised his authority (for the first time) to increase the legislated maximum mintage (500,000) to 600,000. U.S. Mint Facility: Philadelphia Public Law: 108-291 Obverse Engraver: Norman E. Nemeth Description: Historic flag raising on Iwo Jima, Inscriptions: Marines, 1775, 2005