Early German ticket for Black Sabbath with special guests AC/DC in Hamburg on April 18, 1977, 4.5 x 2, marked as "No. 0016." This show came during Black Sabbath's Technical Ecstasy Tour, which featured AC/DC as the opener for the European leg. In very good condition, with staining to the bottom edge, a vertical tear, and old mounting residue on the back.
