I have seen this, but it looks backwards, the tag of the flag is even showing.
It's usual to cut off the tag before displaying the flag.
So from a pole position, you would have to flip the flag the opposite direction to hang on a wall?
Yes, exactly. Fortunately, most flags have the same design on both sides. Not all do, however. For example, the state flag of Oregon doesn't. I don't know how they handle this in their state flag code!
I've attached a photo of the president delivering his State of the Union address in 2003. As you can see, the flag on the wall behind him is displayed vertically in accordance with the flag code.
Peter Ansoff