Thanks guys
here's a couple pics. obviously it's not really possible to determine if a poster is authentic from a picture but here's a couple pics for a general idea. It has the white border at the top and bottom and is definitely 27x41. I took the pictures with it still in the frame but you can see in the second pic that it has a NSS number with "GHOSTBUSTERS II" next to it.


please ignore the reflection and poor picture quality taken from my iphone lol