The Standish Barry Threepence, also known as the 3P, is a noteworthy collectible coin from the United States, minted in 1790. It was produced by Standish Barry, one of the early private mint operators in the U.S. This silver coin is significant as it represents one of the earliest attempts at coinage outside of official government production during the formative years of the American monetary system. The design and limited mintage of the Standish Barry Threepence make it a desirable piece for numismatists and collectors interested in early American coins.