Gee, I guess they must have used a manual typewriter. You know - where each key is pressed by a finger. Have you ever used one?
The letters don’t all come out the same shade of black because the fingers cannot always apply the same pressure. And now over time the ink has faded.
When IBM came out with the Selectric and those odd little lettered balls in differing type, it was a huge improvement.
(Am I ever giving my age away!!)
Age? I’m going to be 64 ina short few days. I was noting that the sharpness doesn’t fit with the faded condition of the other lettering and numbering. The “E” in the fake of the “K” version is sharper and darker too. The “6” in the first edition is faded at it’s top of the number, but the fake has a clearer “O” and is sharper, not as faded in appearance.