There were two Boy Scout rockets fired on April 27, 1960. The rockets were launched at Raeren, Belgium. One was the Dan Beard rocket and one was the Baden-Powell II rocket.
Dr. A.J. de Bruijn created presentation cards for this event which he signed. The card features an imperforate block of 4 Scout Rocket local post stamps.
![Scout Rocket Card](bprocket6.jpg)
This second example of the presentation card also featured an imperforate block of Scout Rocket local post stamps. It is one of two missing color errors known for this issue.
![Carried by the Baden-Powell II Rocket](bprocket7.jpg)