I know for sure this was a folded poster from Animedia Aug '96 because I just
sold one: 
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=731480257&rd=1
It may have been made into a scroll also, and I would assume it was made from a hanken.
Like many magazine covers, video covers, etc.

Hope that helped a bit,

Kelly  ^_^