I havent gone through every coin. The earliest date I saw while browsing was 1919.
Please see photos for a general consensus on age and grade. The item "200 Walking Liberty Half Dollar $100 Face Value 10 Rolls 90% Silver Lot" is in sale since Wednesday, May 20, 2020.
This item is in the category "Coins & Paper Money\Coins\ US\Half Dollars\Liberty Walking (1916-47)". The seller is "todayisanawesomeday" and is located in Lexington, Kentucky. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Bangladesh, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Luxembourg, Monaco, Macao, Martinique, Nicaragua, Peru, Pakistan, Paraguay, Viet nam, Uruguay.