The P50c, also known as the 1923 Pattern Fifty Cents, is a type of collectible coin produced in the United States. It was created as a trial piece during the minting process and features unique designs distinct from standard coins issued for circulation. Pattern coins like the P50c are highly sought after by collectors due to their limited availability and historical significance, often representing innovations or proposed changes in coinage that were ultimately not adopted. These coins typically exhibit high levels of detail and craftsmanship, making them prized items in numismatic collections.