The value of an 1833 US half dime depends on its condition and rarity. In general, 1833 half dimes are considered to be relatively common and are not particularly valuable. According to the NGC Price Guide, the average price for an 1833 US half dime in Good condition is around $10. However, prices can vary significantly depending on the specific condition and rarity of the coin. For example, a particularly well-preserved specimen or a rare variety could sell for a much higher price. It is always a good idea to consult with a professional coin dealer or numismatist to determine the accurate value of an 1833 US half dime.