Here’s a nice billboard for a real estate agency painted on the side of an apartment building on Bay Parkway, somewhere in the low 70’s, I believe. From the general looks of it, I’d say it was probably put up anywhere from the late 1970’s to early 1990’s.
Unlike most advertising, this sign doesn’t seem to detract from the buildings aesthetics. It actually adds some character to its ‘host’, IMO. However, I’m not sure I’d want to live in the upper floors near that cell phone tower.