This glyph is a variant of GD24, with the upper hole or ring opened up:

Ha5-53 Pa5-36 Qa5-44

Its placement here in what appears to be the domain of the Sun gives me the idea that maybe GD24 illustrates two Suns, connected to show they are one, like when you regard the Sun up to noon to be one entity and Sun from noon to sundown another. Which reminds me about Sun being just a poor mirror image of himself after noon.

GD24 could be an abstract idea - apparently two but in reality one.

GD24 in a way is like the double eyes of Venus (one 'eye' for Venus as Morning Star and the other for Venus visible in the evenings.

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