Nice.
This does ring a bell somewhere in my mind, having read something about this somewhere but my memory seems to fail me.
Anyway, the similarities are obvious. But it appears there are too many decans depicted on the card. So maybe this is merely an abstraction of the painted ceiling.
However, if you count the 'ribs' of the wheel on the card so to speak (forming arrow shapes along the lines of the V-shaped legs) there seem to be 72 boxes. It's hard to count them, being partially obstructed by the sun and snake, so correct me if I'm wrong.
So, 72 being 2x36 decans always appeared to me as an interesting number.
There are three rows of boxes. So 3x72=216
Oh, dear... dusting off those crazy books on the holy numbers game...
There's -of course- this whole names of God thing, the 72-fold name, and the angels of the Shemhamphorash. 72 x 3 sets of letters being the 216 lettered name of G.
216=6x6x6, so 666.
Also, 6+6+6=18, 1+8=9, 9 being the funniest number of them all.
And, back to the decans, 216:36=6 (If a six were to be nine

).
...6 sets of decans? -I'm clueless! What springs to my mind is the 6 directions of the cube of space (north, east, south, west, up, down) with it's associated Hebrew letters and corresponding tarot cards. (So, would that be like a sixfold interlocking of decans, like interlocking trees of life?)
What does it all mean? I don't know. Maybe it's just meant to be beautiful. Enlighten me, please.
Sorry for rambling on there, this card has so many wonderful secrets to it

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