Part III: The Circumference and the Hieroglyphic Monad in In Operibus Sigillo Dei Aemeth by David Richard Jones.

“At the top of the Sigillum in the first division is a T with a 4 above it. As we have already seen this 4T is a significant marker for much of the Enochian system. It provides the orientation for both the Sigillum and the Watchtowers.” [via]