Yay!
Ok, back to the "Y" and to clarify. My studies with Tarot started with this deck with this card image. Since the age of 14, and for 22 years, I have studied this deck. It was then I developed the horrible habit of mispelling her name "Coleman", because of the name with my campling supplies.
I studied without books, and have still never read a book dedicated to this deck or any other. I have read lots of books that have Tarot as a Subject, but I was taught by people, and by Orders. This started kind of early, and I started coming to the conclusion each card has a "divine error". These connect this to other things at it's time. I found a Tradition that held this to be true the night of Dec 18, 1998. The "Y" is to us, the Divine Error. This is a masonic idea that predates masonry; that nothing is perfect but G-d.
I believe that is a Glyph, an unfinished leaf indicating the letter generally assumed as "Tzaddi", which is also a big debate in the Book of the Law, to which I think this deck is STRONGLY connected as part of something to big for any man. We think it is a sign she is upon the altar, as the offering on the table of shewbread before the magician (The Lord, not Waite), bound to his will, by renouncing her own.
My speech about Pamela Colman Smith in regard to this is not that she was a failure, but rather that on a plane higher than her ego, she RENOUNCED all things. This is the task of a Master of the Temple. Her last poem seems to be testament to that. We rever her as one would rever a aesthetic who is willing to give their all so nothing shall ever be denied another by giving unto her. We furthermore think her musicophilia (specifically, her "seeing" of sound) was part of the fact she was already on that path.
Her motto was "Quod tibi id alliis,
"whatever you would have done to thee, do unto others"
This motto is easily seen in the interpretation I have of that glyph. The back of the Head, is both where the head is annointed with oil, and the maul strikes to stun the offering.
In the Abramelin Operation, a child is used to call the Angel to appear on the altar. In the operation which led to the creation of this Deck, I believe a Pixie was.