A. One (1) un-illuminated sign per street frontage pertaining only to the lease, rent or sale of the property upon which it is displayed. The
maximum size of such signs shall be as follows:
1. In all residential districts, ten (10) square feet.
2. In all other districts such signs shall be limited to one (1) square foot of area for each five (5) feet of lineal feet of advertised
property which abuts a public street; provided, however, no such sign shall exceed sixty (60) square feet.