No signs, advertisements, billboards, solicitation, or advertising structures or materials of any kind shall be displayed or placed upon any lot without the prior written approval of the ARB. Notwithstanding the foregoing, the following shall be permitted without prior approval of the ARB: street number and name signs, and professionally made, non-digital, non-electric (or otherwise illuminated) sign constructed of metal or wood, installed on one wooden 4" by 4" post, and of not more than 8 square feet of surface area per side (2 sides maximum) containing no handwriting whatsoever, and used solely in connection with the marketing of the affected lot for sale or lease. Wire-stake signs, commonly known as "H-Frame" or "U-Frame" signs, are expressly prohibited. The ARB shall have the right to establish guidelines so as to require a uniform standard for signs in the subdivision.