Like I was saying on one post the other day, is it me or does the "original document" look like it has just one too many dots/specks around it? As if someone dotted it with a ballpoint pen in an attempt to make it look old or worn? I looked at a large copy of it yesterday, and I swear those do not look like dust particles or ink specks/sprays. You can actually see if you blow it up enough, a similar pattern to all those specks as if they all came from the same thing, and the various pressure marks from the pen.
You could also get that effect if you were to print it out on NCR paper, crumple it up, flatten it out and copy it a few times. You would also have to lighten the contrast in order to get out a lot of the wrinkles in subsequent copies.