Here's what he told me a year ago when I questioned him about it:
Its the paper that sells it for me - 100% vintage. I took a little look on the logo, its cleveland,ohio, LPIU local 412 something or another. Its clear but very small, you need a mag-glass. Believe me, I have owned THOUSANDS of one sheets, I have seen all out there - its a nice sheet.… Anyone who says 'Very Dubious' has never seen an old roll of NSS posters. I was at a ski resort years ago and bought a 50-count roll of 1975 'Lucky Lady' of all things. I know unfolded 1970's prints are a little weird but they DO show up every now & then. Its no knockoff, I am SURE of that. I'll get it right to you - let me know what YOU think. I weighed it, measured it, mag-glassed it - it passes all tests, don't know what else to say….
[T]he 64.99 one is 'near mint' - I paid a little extra to get really clean 'mint' ones - the roll had edge damage. What happened is a projectionist died in Nashville, he had a roll of the things, his friend was a poster collector & he traded a bunch of them last winter to every poster dealer on eBay - if he saw a poster he liked, he would just trade 'Woodstocks' for them. Anyways - great sheet - 100% unused - I am sure you'll really liked the authenticity! Really nice pieces! the market will absorb eventually - its nice to get one before gone!
True enough, he sold out of his stock long ago. Only a couple of sellers have any left. Ever poster sold has some "soft folds" or noticeable damage.