I'm a coins collector myself. I share part of the feelings you get when you look at an old piece you have acquired long ago. It brings back good memories and events surrounding the acquisition. I do agree with you on certain facts: when you get a coin, bar (whether silver or gold) or token, I always selected them by their rarity, scarcity or material. It gives you an extra value if you think on investing "for the future." Thanks for your post and tips.