Collectible coins, particularly U.S. coins, can include various denominations and designs that hold interest for numismatists. The 1 One Cent Penny, commonly known as the Lincoln Cent, features several variations, including the Bicentennial and Shield Reverse designs introduced in 2009 and 2010, respectively. The 2020 edition of the Lincoln Cent continues the tradition with a focus on the legacy of Abraham Lincoln. The term "Unknown" may refer to coins that lack specific historical attribution or registry details but still hold potential value due to their condition, rarity, or particular features sought after by collectors.

Item Denomination Series Year Mint
2020-- (Unknown) Lincoln Cents - Bicentennial and Shield Reverse 1¢ (One Cent, Penny) Lincoln Cents - Bicentennial and Shield Reverse 2020 Unknown