Even though I do not doubt the authenticity of your specific posters, angelflyover, since you seem to be getting them from Premieres in Singapore, I am now staying away from anything international. I do not believe any of the posters labeled "international" to be studio produced. It is very sad, as I used to love to collect them. A seller even showed me said posters hanging in a lightbox outside a theater, but even that cannot be hard to do for anyone with a few connections. So Singapore, Thailand and the Philippines are now off limit for me.
Cool posters, though, angelflyover.
T