The mark consists of a left curved line and right curved line forming an ellipse, close to the top of, and separated by, a vertical line; a left curved line beginning at the lower most tangent of the ellipse and passing through the vertical line; an upper right to lower left diagonal line to the right of the vertical line passing through the lower left curved line; an upper left to lower right diagonal line below the right curved line, between the upper right to lower left diagonal line and passing through the lower left curved line; and a lower left to upper right diagonal line beginning in the space between the arc of the lower left curved line and the vertical line, and passing through the vertical line and the upper left to lower right line.