Keep it installed if can be safely removed, car painted, then reinstalled. That is if PHS denotes that dealer actually sold the car. I would keep it because it looks authentic and adds a touch to the car.
I totally agree....
If you want to be "safe" , meaning you might change your mind...take it off fill the holes, grind down the studs and install with dbl sided tape!
but its a "time correct piece", so if its the selling dealer I`d keep it!
usually those were installed with speed nuts on studs ,should easily pry off...
ps , I looked at it again,. its one of the ones that screwed on..... so if you want to fill the holes...cut of the screws even with the heads...silicone then or jb weld heads into the holes of the tag ,then use dbl sided tape, it will 'look' screwed on...