Collectible coins are valuable items that are sought after by numismatists and enthusiasts due to their rarity, historical significance, or unique features. In the United States, collectible coins include a variety of types such as commemorative coins, bullion coins, and vintage currency, each with specific designs and minting processes. The term "Sou M" may refer to a specific coin type or collection, but it is not widely recognized in standard numismatic terminology. Collectors often assess value based on factors like condition, demand, and provenance.

Item Denomination Series Year Mint
1764-A Sou M Sou M French New World 1764 Paris
1767-A Sou M RF Counterstamp BN Sou M French New World 1767 Paris