This is the basic symbol that is on Tacet's neck brace. I made this a long while back prior to commissioning Tacet. I am uploading it mostly for commissioning purposes due to the fact that it is a lot easier to draw this concept of the symbol than the one on Tacet's reference sheet.

Drawing Description:
It is a plus sign with a negative space division sign within it. Each of the 4 prongs that point to it are rectangles with one side evenly pointed. The pointed sides of the pointed end of the rectangle should both be parallel with the adjacent side of the plus symbol. All of it is surrounded by a circle.