I bought the poster 20 years ago from a company in Los Angeles that got the signatures and put the poster together. It's a very limited edition, only a small number were signed. I knew their manager and they offered me good prices at the time. This was one of my favorite movies so I bought it and have kept it in great condition all these years. Yes, it comes with a certificate of authenticity from that company verifying all the signatures.サイズ27x40