The mark consists of Drawing in the form of ¿ of a circular plate beginning at the 12 o'clock position and ending at the 9 o'clock position, with 3/4 of a circular opening in the center, the perimeter of the plate being outlined in white and divided into three equally-sized segments with white radial lines separating the segments at the 3 o'clock and 6 o'clock positions, the first segment being red with circular white dots of various diameters, arranged from larger diameter dots near the outer edge to smaller diameter dots near the inner edge, the second segment being black with red dots of various diameters arranged randomly, and the third segment being red with arcuate white lines intersecting radial white lines.