United States Mount Rushmore Anniversary coins proof set 1x 1991-W USA $5, 50th Anniversary - Mount Rushmore (7.52g of Gold) 1x 1991-S Proof USA Mount Rushmore Golden Anniversary Dollar (24.06g Of Silver) 1x 1991-S Proof USA Mount Rushmore Golden Anniversary Half Dollar (Clad) United States Mount Rushmore Anniversary coins proof set 1x 1991-W USA $5, 50th Anniversary - Mount Rushmore (7.52g of Gold) 1x 1991-S Proof USA Mount Rushmore Golden Anniversary Dollar (24.06g Of Silver) 1x 1991-S Proof USA Mount Rushmore Golden Anniversary Half Dollar (Clad)