1921 Walking Liberty Half Dollar. MS-64 (NGC). CAC. This gorgeous premium Choice half dollar is toned in iridescent champagne-pink that yields to warmer rose and powder blue patina around the reverse periphery. Luster is full and frosty and the surfaces are very smooth for an example of this key date Walking Liberty half dollar. The 1921 has almost always been in high demand, but not until most had already entered circulation. Demand for new half dollars was low that year as the world economy adjusted sharply, reflecting the changes from war driven production to peacetime activities. The 1921 has a mintage of 246,000 pieces and perhaps just 750 remain at all levels of Mint State preservation. From the Larry H. Miller Collection. From the Larry H. Miller Collection.