Collectible coins are items of numismatic interest that can include historical pieces, specific denominations, or coins from particular eras. The "One Penny" coin, a denomination used in various countries, may refer to early issues from the United States around the post-Declaration period circa 1790. This era is significant in U.S. history, as it followed the establishment of the nation and marks the beginning of its coinage system, though specific minting records for such coins may be scarce or unclear.

Item Denomination Series Year Mint
1790-- (Unknown) Early - Post-Declaration 1p (One Penny) Early - Post-Declaration 1790 Unknown