The button reads "PHENOLCHEMIE" along with the identification number 102.
Phenolchemie GmbH (founded in Gladbeck, Germany in 1952) grew to become the world's largest producer of synthetic phenol. During the post-war industrial boom of the 1960s and 1970s, it was standard practice for major German chemical plants and heavy industries to issue custom-branded, heavy-duty clothing to their laborers
The material is German Deutschleder (German leather) or thick moleskin cotton. My This dense, tightly woven construction protected factory workers from friction, chemical splashes, and sparks.
