https://www.stanleygibbons.com/medias/sys_master/8861642424350/coinindex2012.pdf Very interesting. Only one coin on there that would interest me. It struck me too that many of the pieces there are out and out rarities which have always created a free for all when they come around. Given these buyers are not driven by collecting motives, one can only assume that the strength outside the 'investment' pieces is simply due to increased demand from 'normal' collectors. Bit of a blurred distinction here as many 'normal' collectors don't like parting with their coins for less than they paid. Having said that, a person I am familiar with wanted to buy for investment reasons, but wasn't patient enough and so lost money on the sale. C'est la vie. The amount of money that generally flows though investment managers probably dwarves the amount available to ordinary collectors. A lot of these funds probably have a minimum commitment of US$ 250k or more. Where you have a lot of money chasing a finite resource you get inflation.