This 2011 $100 Platinum Eagle Proof is the largest denomination coin issued by the U.S. Mint. 2011 is the 14th year in the 99.95% pure Platinum Eagle series and this year's design ...

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This 2011 $100 Platinum Eagle Proof is the largest denomination coin issued by the U.S. Mint. 2011 is the 14th year in the 99.95% pure Platinum Eagle series and this year's design shows the familiar Statue of Liberty obverse, and an allegorical reverse design symbolizing "to ensure domestic tranquility." It's the latest in the yearly series honoring the tenants of the U.S. constitution. Platinum is 30 times rarer than gold and is a vital industrial metal—smart buyers will stock up on these proofs now!