There is more than one artist using the name Anvil:
These are photos from concerts where Anvil played, so they may be of other bands that played the concert as well.
Anvil Nov 5, 2016 Fosser, Norway Uploaded by Jarle Lindeland
Dirkschneider / Anvil / Dying Gorgeous Lies Apr 22, 2016 Heidelberg, Baden-Württemberg, Germany Uploaded by Murmlermicha