The image provided is so low resolution that this is probably a side effect of the edges of the characters being on the boundary between pixels on the camera's sensor.
Magnify it to full screen and you'll see what I'm talking about.
Now go back and look at the samples I linked to, where you can clearly see vertical misalignment.
I remember everyone in my school system had selectrics when I was a kid, and I assure you, they could produce text that was all over the place. Probably because the ones in a public school saw heavy use / were not properly maintained and serviced to the degree required.
Edit: We can all pretend it's perfectly aligned print, but, regardless, whether purposefully manufactured or genuine, there are obvious misalignments in that image.
Magnify it to full screen and you'll see what I'm talking about.
Now go back and look at the samples I linked to, where you can clearly see vertical misalignment.
I remember everyone in my school system had selectrics when I was a kid, and I assure you, they could produce text that was all over the place. Probably because the ones in a public school saw heavy use / were not properly maintained and serviced to the degree required.