Collectible coins, specifically the 10-dollar gold pieces, often include issues from the United States that date back to the mid-19th century, such as those minted in 1853. Territorial coins refer to pieces struck in regions that were not yet states but were part of the U.S. These coins can carry significant historical value and can be sought after by numismatists for their rarity and connection to the growth of the United States. The term "unknown" may pertain to coins whose origins or mintage numbers are not extensively documented, potentially increasing their appeal to collectors.

Item Denomination Series Year Mint
1853-- (Unknown) Territorials $10 (Ten Dollars) Territorials 1853 Unknown