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.
Loud Park 2009 Oct 17 - 18, 2009 Tokyo, Tokyo, Japan Uploaded by Fantomos
Anvil / The Answer / AC/DC Jul 31, 2009 East Rutherford, New Jersey, United States Uploaded by Greg Fasolino
Download Festival 2009 Jun 12 - 14, 2009 Castle Donington, England, United Kingdom Uploaded by Thekilburnoracle
Download Festival 2009 Jun 12 - 14, 2009 Castle Donington, England, United Kingdom Uploaded by Josh King
Black Stone Cherry
Download Festival 2009 Jun 12, 2009 Castle Donington, England, United Kingdom Uploaded by A4angelv