Based on its 2014 price guide, a Walking Liberty half-dollar coin is worth between $9.53 to over $2,000, depending on its year, condition and mint mark. The most valuable coins are from 1919 and 1921.
In general, coins minted at the Denver Mint are worth the most, followed by San Francisco and Philadelphia. Many coin collectors grade a coin's condition on a scale of good, fine, extremely fine and uncirculated. In 1917, Denver and San Francisco printed the mint mark on the obverse side, rather than the typical reverse side, increasing the value of those coins. The lowest value for these coins is based on the melt value of their silver content.