coins \ Coin \ United States of America \ $20 (Twenty Dollars) \ American Liberty Gold \ 1890 \ Philadelphia
Collectible coins include various types such as circulation coins, commemorative coins, bullion coins, and proof coins. The United States offered a Twenty Dollar gold coin known as the "Double Eagle," with notable issues such as the 1890 Philadelphia mint mark variety. American Liberty Gold coins are also part of collectible coinage, featuring designs that symbolize freedom and democracy. Collectors often seek these coins for their historical significance, artistic value, and precious metal content.