There is more than one band with this name:
These are videos from concerts where Pentagram played, so they may be of other bands that played the concert as well.
Pentagram / Radio Moscow / Kings Destroy / Sons of Huns / Mothers Whiskey Feb 23, 2014 Portland, Oregon, United States Added by Terabyte23
Pentagram / Iron Rainbow Jul 22, 1995 Huntington, New York, United States Added by Jeffrey Lee
Unorthodox / Iron Man / Pentagram Dec 11, 1993 College Park, Maryland, United States Added by Jeffrey Lee
AKA Buster Brown Eye / Cathedral / Pentagram / Iron Man Dec 6, 1993 Washington, D.C., United States Added by Jeffrey Lee
Wretched / Pentagram / Internal Void Oct 31, 1993 Braddock Heights, Maryland, United States Added by Jeffrey Lee