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You are looking at the 2006 U.S. Mint Uncirculated 20 Coin set. These are Mint State coins from the Denver (D) and Philadelphia (P) Mints.
The coins in this set are minted on special presses and are struck with greater force than circulating coins, producing a sharp intricately detailed image.
The FLASHY set includes:
2 - Sacagawea Dollars - P & D
2 - Kennedy Half Dollars - P & D
2 - Roosevelt Dimes - P & D
2 - Lincoln Cents - P & D
2 - Nickels - Return to MONTICELLO P & D
10 - State Quarters - P & D from Nevada, Nebraska, Colorado, North Dakota and South Dakota
Sets come in U.S. Mint issued Envelopes and COA. Beginning with the 2004 Mint sets the U.S. Mint supplied a consolidated COA for borh Mints in the Philadephlia Mint Set envelope.