Dirt on the back and the underside of the left arm (photos available). Size is XL. I believe I bought this around 2005 at the Dongba Script Culture Research Institute in Lijiang City, Yunnan Province, China. Dongba script is a type of hieroglyphic writing passed down by the Naxi people of Yunnan Province. It is currently considered the world's only "living hieroglyphic script." I don't know the meaning of the characters, but according to AI, it is sometimes explained as a combination of cultural symbols of the Naxi people.