I’m more of an investor than a collector: I acquire certain items that are likely to increase in value in the coming years.

I would put myself into same category. However, I mostly invest in physical precious metals, property and cryptocurency, and some alcohol as well, also some money invested in stock market. I consider Disney dollars as a collectibles. I’m a bit sceptic in this kind of investment (as you mentioned counterfeit is what I’m worried about) but it’s what you believe in and that’s the most important. I believe your Casascius physical bitcoin tokens will have unbelievable value in few decades and I’m talking about millions. Man, I wish I had one of these when they were made.