Collectible coins, particularly from the United States, often feature significant denominations such as the One Dollar coin. Patterns refer to experimental pieces created to test new designs or features, typically produced in small quantities. The 1977 Philadelphia Mint productions include various types of patterns, which are highly valued by collectors due to their rarity and historical significance. These coins may showcase unique designs not seen in regular circulation.

Item Denomination Series Year Mint
1977 P$1 Copper-nickel clad J-2171 $1 (One Dollar) Patterns 1977 Philadelphia