Comments from Submitter:
I have one poster since I was a Kid, and the only 2 sets I got new that could fit the poster were the Particle Ionizer and the Stellar Recon Voyager, so one of the 2 must be the source of the poster. It is unlikely it was included with the Particle Ionizer so that only leaves this set. If somebody can tell if it was ( or was not ) included in the European version of the Particle ionizer we can rule that one out.