that's a very cool sign, how would you even be able to tell?
if it was $100, i'd take the gamble.... but it's a lot more than that!
you have one of these mate? or have seen one before?
You would have to have it in hand to tell for sure 100% I have posters of similar age but they sure dont look that perfect!! Seen the advertising before - don't own any!
Would be cool but even if its it was original $150 would be closer to a sensible price.