This striking black-and-red 20 Pfennig commemorative stamp was issued by Germany in 1965 to mark the centenary of the death of Adolf Kolping, a prominent Catholic priest and social reformer. The design features a finely engraved portrait alongside his signature, giving it a dignified and historical character. Kolping was the founder of the Kolping Society, dedicated to supporting young workers during the Industrial Revolution. The vertical inscription “DEUTSCHE BUNDESPOST” clearly identifies its Federal German origin. A meaningful addition for collectors of religion, social reform, and German commemoratives of the 1960s.