That “a” has picked up a lot of ink. Is it so very surprising that the ink spread over the imaginary line? Look at how the “a” and “n” in the same word are joined. It’s the same thing: too much ink on an absorbent surface like paper. Nothing fancy or modern or highly technical required.
Did you notice all those filled in letters you cruised on by? DIRT! Builds up on both sides of the type face unless you clean it regularly.
Notice how damned near every letter on the document is misformed, misshaped and any many cases run together. No typewriter does that. Hell, no word processor does that. Must be a hand forgery!