This is a very good condition, US Army / U.S. Marine Corps (USMC) M1907 leather sling, made in 1918. The sling has its original brass hooks and leather keepers. It is stamped on the shorter (lower) end of the sling with "HOYT 1918,"
The sling is complete, never cut. This is the type of sling used in WWI on Springfield M1903 rifles and Enfield M1917 rifles, and used in WW2 on M1 Garand, M1903A3, and other rifles, and occasionally used on other weapons as well