Hi! I have no idea on the charm, but I'm guessing it's not the easiest thing to find. As for the pamphlet, I don't think it was specific to the Fan Club. I remember getting that pamphlet with ponies I purchased back in the 80s. I also tend to think of the Fan Club (at least the one available in the US) being around in Year 2-3 while I'm guessing this pamphlet is more c1987. Would you mind saying how you figured out it came w/ the Fan Club?
All that said, the charm is the far more interesting piece here, so I hope someone chimes in who has an idea on its value!