The liner is marked "ABL" but I cannot make out date. The liner is in excellent condition with no breaks or cracks. It has the insignia hole in front.
It has light brown leather chin strap. The canvas has fading and there is wear to leather sweat band.It also has a tri-color decal on the left side. More photos available if you need them. The item "REDUCED Korean War Era US Helmet Front Seam Swivel Bail ABL Liner EXC" is in sale since Monday, July 29, 2019. This item is in the category "Collectibles\Militaria\Korea (1950-53)\Original Period Items". The seller is "mikenhannah" and is located in Kimberly, Alabama. 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, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Luxembourg, Peru, Reunion, Viet nam, Uruguay, Russian federation.