BWAHAHAHAHA!!!!!! Welcome to the crazy world of reps! Goofy crap engraved inside the case back has been going on for years. The most famous, sought-after one is the "Genela, Shitinerand" one, which is supposed to be (I think) Geneva, Switzerland.
I honestly don't know if it's a translation thing or a silly attempt at "plausable deniability"......it's not a rep because it's a "Polfy!"
The good news is the newer, better quality reps don't do that any more, at least they'd better not. Don't worry about it, though...if somebody that knows what they're looking at opens the caseback, the last thing you have to worry about is the Polfy!