Collectible coins are items produced for numismatic interest, often featuring unique designs, historical significance, or limited production runs. In the United States, specific collectible coins include the 1 cent (1c) coins, such as the Lincoln penny, which has undergone various design changes since its introduction in 1909. Proof sets, particularly those minted in San Francisco, contain specially struck coins known for their reflective surfaces and high-quality finishes. The 1978 Proof Set includes notable coins like the penny, nickel, dime, quarter, half dollar, and dollar, allowing collectors to acquire pristine examples of each denomination from that year.

Item Denomination Series Year Mint
1978-S 1c-$1 Proof Set 1c-$1 Proof Sets 1978 San Francisco