Congrats on the nice silvers you found !! I don't know if you are familiar with the 1917-S walker or not, but the 1917 has the S & D mint marks on the obverse or the reverse sides. Your version with the S on the front, (right under the R of the "In God We Trust") is the rarer of the 2 varieties. It's the only Walking Liberty that has a mint mark on the front.
Less than 1 million mintage where as the 1917-S with the mint mark on the back has over 5 million mintage.
Great hard to get find !!!! Beautiful !!
Link to 1917-S on obverse data:
The designer was Adolph Alexander Weinman for PCGS #6572. Visit to see edge, weight, diameter, auction records, price guide values and more for this coin.
www.pcgs.com
"David Hall: The 1917-S Obverse is one of the key dates in the Walking Liberty half dollar series. In fact, several decades ago this was the most expensive coin in the series in mint state condition. We now known the 1921-S, 1919-D and several others are quite a bit rarer. Still, this is a very scarce coin in all but the very lowest grades. VFs and EFs are really hard to find. This is a rare coin in mint state and Gems are very rare. Strike is usually not an issue. The luster on Gems, when you find them, is usually good, though of course the early Walkers don't have that white blast of the later dates and the color is usually a softer white. "