There is more than one band with this name:
These are photos from concerts where Pentagram played, so they may be of other bands that played the concert as well.
Maryland Deathfest VIII May 28 - 30, 2010 Baltimore, Maryland, United States Uploaded by Hackblowfist
Bobby gives the traditional "Hook 'em Horns" salute. Image: Jeffrey Lee
Pentagram / Black Tusk / Rwake May 26, 2010 Austin, Texas, United States Uploaded by Jeffrey Lee
Bobby loitering at 6th & Red River. Image: Jeffrey Lee