The above is a shape related to the form known from ancient Egypt as the "Ankh".
I have become interested in it, or rather in a specific variation of it, namely this shape where the above form is a perfect circle, the horizontal shape is a line, and the vertical shape is also a line.
Does anyone know if the form i described is part of any known egyptian hieroglyph? (it doesn't have to be the whole hieroglyph, just part of it will do as well).
If it is also part, or the whole, of any other known symbol of any period, i would be interested in that as well. In a way you could say that it is part of the christian cross, if the circle is replaced by its vertically united diameters (or just one of them, the one continuous with the other line), and the circle stops existing. But i would ideally want a shape where the circle still is there, from past times.
LATER EDIT: So as to clarify the shape i am looking for a bit more:
The horizontal line has to be passing through, at its own center, the lower edge of the circle (obviously in the end of the line starting where the circle's horizontal and vertical diameter meet, towards the side of the circle's periphery where the center of that horizontal line passing through it is)... It also has to be larger than the diameter of the circle. The vertical line, also, is larger than the diameter of the circle (in fact it is probably larger than the horizontal line too).
Moreover it has to be a form known from antiquity
So basically instead of the shape you have on top in the ankh, you have a circle, the horizontal line is connected to the circle on the edge of its periphery, in the center of that line, and the vertical line is below it. Both the horizontal and the vertical lines are larger than the diameter of the circle. The vertical is probably a bit larger than the horizontal
It is quite different from the "symbol of venus" (symbol for women) in a variety of important ways, eg the horizontal line is not linked to the periphery of the circle in the venus symbol, nor is it larger than the diameter of the circle etc 
