The half dollar is one of the most popular U.S. coins to collect. Though many aren't worth more than their face value, older ...

the value of any coin is subject to its rarity, condition and demand. However, some of the most valuable 50-cent pieces sell to coin collectors for thousands or even millions of dollars.

With a mintage of just 200,000 - this rare 50p is more in demand than the iconic Kew Gardens coin from 2009 - and IT was only ...