2006 3pc Silver Eagle 20th Anniversary Set NGC Graded With Box & COA. Included in sale are. NGC graded MS 69 Silver Burnished 2006 W American Eagle. NGC graded PF 69 Silver Proof 2006 P American Eagle – Reverse Proof. NGC graded PF 70 Silver Proof 2006 W American Eagle – Ultra Cameo. Coins were graded using the American Eagle Silver Dollar Set Label for a beautiful presentation.