I saw this the other day and despite walking by it all the time, the absurdity finally struck me.

It’s one thing to misplace the period on an abbreviation. It’s another to do it twice.

And the odds of doing it twice made me think of two things:

1. Maybe the periods are not misplaced but merely being used as some sort of divider
2. Perhaps the writer is dyslexic and swapped the periods without even realizing.

In the first case, the writer is choosing style over meaning — a mistake in most cases and especially when working in signage.

In the second case, I just think you should double and triple check something before you write it two feet high on the side of building. But heck, that’s just the designer in me.