leather rifle sling

1 Military Leather Sling, Boyt No. SL 1-K, in original package. I bought several of these slings from one of the parts houses. These slings came in the original package as shown in the photo. The sling shown on my M1903 is the same as the one in the package. I see that there is a water stain on the package and have no idea if it came that way or it happened here. Package is foil lined so that should not have affected the contents. All gun parts whether new or used, but especially used parts, should be installed by a. Experienced or qualified to do so.