Hey Jim, on yours thats smaller. Is there a form number on the front? The repo I have says "Form 520" (lower left corner.)
No form number on mine, although a small part is gone from it. There may not be room for a number. (FYI: The scanner must have enhanced the blue ink on the form. It is much more light/faded in the real thing.) Check out the difference in borders of the repros and mine.
Also note that the typeface was applied with what might have been a worn mechanical printer. Many letters are cut off or worn in areas.