I have some Portuguese translations of the Gold Key Comics, and a few Brasilian translations of the DC Comics run on TNG.
It's easy to tell the difference because of the differing translations for the name Star Trek itself: Caminho das Estrelas (Portugal) versus Jornada das Estrelas (Brasil).
Cover art for some of the Brasilian Gold Key reprints is entertaining, like this one featuring Spock running off with a blond babe
I'm trying to list all of the Gold Key foreign language reprints on this page. You need javascript enabled in your web browser to view and filter the cover images.
http://homepage.mac.com/mmtz/stcomix/world/goldkey.html
I don't own very many of the foreign reprints, so if anyone has good cover scans you're willing to share, please contact me. thanks