1921 P Walking Liberty Half Dollar, Better Semi-KEY Date Silver 50C Coin. The item "1921 Walking Liberty Half Dollar, Semi-KEY Date Silver 50C Coin NGC G 4" is in sale since Friday, November 19, 2021. This item is in the category "Coins & Paper Money\Coins\ US\Half Dollars\Liberty Walking (1916-47)". The seller is "twosides2acoin" and is located in Omaha, Nebraska. This item can be shipped to United States, Canada, United Kingdom, Denmark, Finland, Malta, Australia, Cyprus, Japan, China, Sweden, South Korea, Belgium, France, Ireland, Netherlands, Italy, Germany, Austria, Mexico, New Zealand, Switzerland, Norway, Bermuda, Guernsey, Gibraltar, Jersey, Monaco.