The triple Tau may be taken to represent the Ace of Pentacles.
Compare the design which illustrates the Eight of Pentacles.
A crowned figure, having a pentacle over his crown, clasps another with hands and arms; two pentacles are under his feet.
When I first saw him he was tracing circles and pentacles in the grass and talking the language of the elves.
Then, just opposite to one of the Vales' in the pentacles, it seemed to pause, as though preliminary to a tremendous effort.
I moved right to the center of the pentacles again, and knelt there, making myself as small and compact as possible.