2019-W Reverse Proof Lincoln Cent, Articles, General News, Lincoln Cent, Mistakenly Included With Clad Proof Set, News, NGC, Numismatic Guaranty Corporation, Silver Proof Set, U.S. Mint NGC grades mistakenly released Reverse Proof Cent April 12, 2019 Numismatic News Staff Leave a comment Close-up view of the 2019-W Reverse Proof Lincoln Cent obverse, which was mistakenly released early by the U.S. Mint Continue reading on Numismatic News