so i went down a rabbit hole trying to find the original 1978 trailer and can’t.
this is the damage to historical archiving done by the Mickey Mouse extension to copyright law and the DMCA.
Puerto Rico is treated as an international market. the trailer i saw as a child for Close Encounters of the Third Kind was revolutionary because it had no voiceover and showed you just enough to plant the seeds of terror & excitement.
this isn't it, but it’s close:
https://www.youtube.com/watch?v=3Dacfll4bVU