In 2003 they released a single "Nightingale" as a forerunner of their 2004 album "Insidious" on Fossil Dungeon records.
The cd version of this release had printed in the inlay and on the cd itself this symbol.
The first is of course the symbol of planet Mercury but also of the element, an ancient symbol for what the alchemists refer to as First Matter. It has been very often been used in goth band imagery. See it here along other planetary glyphs.
The second is the unicursal hexagram, a symbol that represents "a high level of self-confidence and belief that one can achieve the highest of goals and become a divine figure".
It is one of the most used glyphs by Thelema, the spiritual philosophy -now turned official religion- that occult magician and philosopher Aleister Crowley, a very controversial personality indeed, created in the early 20th century...
To complete for today see the inlay spreads of Mephisto Walz's maxi cd and note the wonderful cover...
Stay tuned for more!