The whole list below is made of coins composed of a majority of silver that were actually sold at an auction before and include both the most expensive coins in the United States and the world.
8. 1870 S Seated Liberty Dollar: $1,092,250
7. 1797 Draped Bust Half-Dollar: $1,527,500
6. 1894-S Barber dime: $1,997,500
5. 409/6 BC Decadrachm: $2,918,000
4. 1704 Ivan VI Pattern Silver Rouble, Russia: $3,858,850