From what I recall (and keep in mind, it's been many years since I owned one), that the "stamp" on the bottom of mine was simply a sticker that peeled off. I'm fairly confidant that was genuine since I bought it from a Shure dealer at the time. I *think* the writing on the sides was actually printed on the cartridge body, but I don't quite remember 100%.
And I also seem to recall that some of the earlier versions didn't have any indicators/markings at all to denote the version.
I suspect there are those with much more knowledge who can chime in with a better assessment of the particular cartridge in question. From what I see, it doesn't raise any red flags.
One thing I have seen on the counterfeits is that they'll "center" the little brush on the end of the stylus guard. On the real ones (and the one in your photos), that little brush is actually off-center, the reason being it sweeps the grooves the needle is about to trace, a few seconds ahead, to clear out any dust/debris coming up. Or at least this is what I believe it's intended position is for.