1918-S Walking Liberty Half Dollar. MS-64 (PCGS). Available to a certain degree in MS-64, the 1918-S Walking Liberty half dollar is rare any finer. The usual strike weakness occurs in the centers, although this frosty Walker is otherwise well-struck. Rich golden and russet toning graces each side, and a couple of minor ticks on Libertys thigh are the only mentionable abrasions. This piece balances quality and affordability.