1921 S Liberty Walking Half Dollar VF 25 NGC CAC Silver 50c SKU:I2851. A genuine 1921 S Liberty Walking Silver Half Dollar Coin, graded and certified VF 25 by NGC & CAC. Weinman, this 90% silver Liberty Walking half dollar is one of America's most beautiful coins.The obverse shows Liberty with arm outstretched, striding towards the dawn of a new day. The reverse depicts an eagle on a rocky crag, where a pine branch grows to symbolize strength. The images you see are for the exact item you will receive.