I still have this rocket. I purchased it in '73 or '74. I'm looking at it right now.

The two middle pictures in the above post are correct. The small wording under "Estes Vampire" is "For study and research purposes.
Stand clear during launch phase." This lettering is in red.

In the design next to this wording, also in red is "1/2A3-2T" just above the upper line of the design that's next to the two balls.

Hope this makes sense.