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.
Whitesnake / Twisted Sister / Anvil Sep 6, 1983 Brussels, Brussels Capital, Belgium Uploaded by Peter Beirnaert
Black Sabbath Garden Party / Anvil / Mama's Boys / Twisted Sister / MOTORHEAD Aug 28, 1983 Dublin, Leinster, Ireland Uploaded by Rockerman75
Black Sabbath / Motörhead / Twisted Sister / Anvil / Mama's Boys / Diamond Head Aug 28, 1983 Dublin, Leinster, Ireland Uploaded by Zimtrim
Site layout from programme
Reading Rock Festival 1983 Aug 26 - 28, 1983 Reading, England, United Kingdom Uploaded by Craig Hatfield
Programme (back)
From Marillion 1984 tour programme
Sounds review
Lee Aaron