[Hootowl]

Also, if you blow up the area that shows 61-10641, the last “1” shows pixilation that is not in the other digits. Why is that, I wonder?

[Cletus.D.Yokel]

All the items showing pixilation existed in the original “layer”.

Both of the ‘K’s in Kansas and Kenya as well as the ‘M’ in box 5b.

[agere_contra]

That my friend is simply what we would expect from a "1961 Pixellating Typewriter". Very common. Nothing to worry about.

You are dead right. The image has been doctored with a digitally-added number. Who's B/C was it copied from? Someone in the range 10642 to 10649?