I was never much of a button collector but I bought a few. Here are 2 of the 3 I know that I had. The other was a Stryper button from 1985 (my first metal show) that I lost a few years back.
The Yngwie one came from Triumph/Yngwie 1986. Thomas’ dad took us to the show. He sat in the rafters while we stayed close to the front. Triumph was on the Sport of Kings tour and Yngwie was on the Trilogy tour. Jeff Scott Soto had come back into the band for the tour. Don’t really know why Boals left but we were all happy to see JSS on stage. Both bands were great. I couldn’t afford a shirt so a button was my souvenir.
The other is from Iron Maiden/Anthrax in 1991. I am pretty sure that I bought a Maiden shirt that likely disintegrated shortly after the show.