1814 platinum half dollar

The 1814 platinum half dollar (J-44[1]) was a United States pattern coin with a face value of fifty cents.

Its design was identical to the Capped Bust half dollar, but struck in platinum.

[2] A unique example with 33 "P" punch marks has been given the catalog number J-44a.

It has been described as "one of the most intriguing - and mysterious - pattern coins ever produced by the United States.

"[3] There are two examples known without the punch marks.

The only known example of the counterstamped 1814 platinum half dollar, J-44a