This is a 1923-S Monroe Doctrine Commemorative Silver Half Dollar, struck in business style with a fineness of 0.9. It is ungraded and uncertified, but circulated and minted in San Francisco. The denomination is 50C, with a KM number of 153. This coin features the iconic Monroe Doctrine and is a valuable addition to any coin collection. The country of manufacture is the United States and it belongs to the category of Coins & Paper Money, Coins: US, Commemorative, and Silver (1892-1954).