Hi,
I was looking at some posters on EBay and I thought that I would compare 2 reputable dealer's posters to an unknown seller's poster of the same title. On the 2 reputable dealer's posters, the fold lines were remarkably similar. On the unknown seller's poster, the fold lines were noticeably at different points throughout the poster, both vertically, and horizontally. I read somewhere that posters issued to theatrical venues were (and maybe still are) machine folded.
In your experiences, can fold lines be a barometer, of sorts, to determine authenticity?
Ba