1972 KENNEDY HALF DOLLAR WORTH MONEY – RARE & VALUABLE US COINS TO LOOK FOR!!
For that coin, the upside down eagle is the right way up – so you do not have an error, and it is worth 50 cents. If the eagle is upside-down compared to the face on the other side, it’s supposed to be like that. Assuming the lack of initial means there’s no mint mark, then the coin is from Philadelphia.