Thanks Test1 for your PM on the Spielberg Thai posters posted above. Although you should post it here. That's what the forum is for.
Yes, some Thai posters are really hard to find, and Gremlins, Goonies, Back to the Future and Poltergeist were a real challenge. But I'm not in a hurry. Everything comes in time. From the information I have been able to gather, there are less than 10 copies in existence of each title, Back to the Future less than 5. But as a completist, numbers don't matter. What matters is to own one.
T