Supposedly an ancient Roman symbol which questioned the validity of Christianity. It consists of an equal-armed (solar) cross, however the four bars of the cross do not meet at the center. Instead, there is a dot in the middle. The decending bar is replaced by a sickle, giving the appearance of an inverted question mark. Popularized in recent times as a symbol used by the band Blue Oyster Cult.
Readers, please enjoy this guest blog post by Sandra Kynes, author of several books, including The Herb Gardener's Essential Guide, Plant Magic, and the new Witches' Encyclopedia of Magical Plants, among many others.
Although a few old books...