Be careful with ORIGINAL posters that were used in theatres.For instance an original
British quad from say The Italian Job might cost over £2000 but you could get a repro for a few pounds.Some sigs can devalue original posters whilst others can increase the value. A dave prowse will not significantly increase the value but if it was signed by say Mark Hamill then the value would go up significantly. MSPG are absolutely right about having it multi signed, this is a good investment idea but best to keep the sigs away from the artwork and as MSPG say keep a good record of where and when signed with photo proof if you can get it -- there are so many forged Star Wars sigs on ebay it is beyond a joke! So always try and buy from UACC Reg dealers when not getting in person sigs yourself.
Be very careful when having movie posters mounted and framed, DO NOT DRY MOUNT THEM! Have them conservation framed by a movie poster art gallery.
