The mark consists of a main square that is white on top and fades to gray on the bottom. A second square is formed by a thin gray line just inside the outer edge of the main square. There is a cream colored pinwheel in the center of the square, on top of which is an image of a white feathered writing quill having a brown quill and gradient shades of brown to cream shaft and gray shading. The wording "THE PEN-WHEEL POST" is inside the square and above the pinwheel design in black stylized writing. Just below "THE PEN-WHEEL POST" is the letter "P" in large stylized black font to the left margin and the letter "W" in large stylized black font to the right margin. Centered and at the bottom of the square is the letter "P" in large stylized black font.