Compare it to this:
Looks pretty much the same to me, except that the lettering is slightly taller in your photo. Considering that I've actually seen this vary from one Shure mic to the next bought a few years apart, that's not a red flag to me.
As for the cable,
the SM58-LC comes without a cable. It could easily be an
SM58-LC with a third-party cable thrown in. That isn't particularly uncommon.
The bag difference... again, I'm sure that every time Shure tools up a different company to make their bags, there are probably subtle differences.
The only thing suspicious in my mind about the photos in the previous page is that the lettering on the box is aligned incorrectly. The 58 has a higher baseline than the SM. That seems wrong to me, but you'd have to ask one of the Shure guys on the board to know for sure. It's possible their graphic designers were just on crack that week.
A higher resolution shot of the paperwork could probably clear a lot of the questions up.