One clinical study looking at essential oils for treating children with eczema found that massage with and without essential oils helped improve dry, scaly skin lesions. Children with this scaly, itchy skin problem seem to have less redness, scaling, and other symptoms if they had massage between flares.
Serial numbers on firearms in US were made mandatory by the Gun Control Act of 1968.
The weapon in question appeared to be a GI M1 Carbine, but it was innocent of any manufacture or importer markings, and had no serial number. Now, there are guns that shipped with no serial numbers, back long ago, and there are other reasons you might encounter a gun now with no serial number.