This is not an artifact of me fooling around with Photoshop. Nor can I imagine some Google drone did this during the newspaper-scanning process. You're welcome to look at the original here.
My guess is some bored artist or letterer in 1947 seeing what he could sneak past the editor.
Once upon a time, in a galaxy far, far away, people actually assembled "pen" and "paper" and "envelope" and "stamp," composed their thoughts in an unhurried fashion without electronic distractions, and sat down to "write a letter."
This is your history lesson for the day, you young whippersnappers! Now get off my lawn!
I presume that Archie is not hallucinating here, and that Veronica's Alice-like abilities are canonical, part of the Riverdale continuity. And I look forward to her future exploits.
Category: Obscenity, Comics, Teenagers, 1940's, Butt