David Hall via PCGS CoinFacts. Mint state examples are usually well struck. Gems have the white satin look of the early Walkers. Gems are available but scarce relative to other denominations.
Typically, the smaller denominations were saved more than the larger denominations during this era as face value was an issue when collectors of the day decided which coins to save. It cost a lot less to save new pennies and nickels than it did to save quarters and half dollars. When it came to silver dollars, the government did the saving as silver dollars sat in government vaults until the 1950s and 1960s.
But half dollars were probably saved in the smallest quantities during the pre-World War II years. The item "1917 50C Walking Liberty PCGS MS65 CAC-Verified Silver Half Dollar Gem" is in sale since Saturday, May 30, 2020. This item is in the category "Coins & Paper Money\Coins\ US\Half Dollars\Liberty Walking (1916-47)". The seller is "coinsforcause" and is located in Corona del Mar, California. This item can be shipped to United States.