but I wonder who are the people who are willing to pay for something like that?
There are more crazy people than we imagine out there who is willing t spend their money on useless things. And we can find hundreds of lists like this
10 Worthless Items Sold for an Insane Amount of MoneySo, you never know there may be rich guys out there who want to buy the piece of stats for more than its actual market value.
This may become a thing on the future, we already have people collecting coins or paper money and they buy it for an amount above its nominal value or buy it above its value when considering its precious metals content, then it would not be that surprising if investors began to buy bitcoin not only for its superior characteristics compared to fiat currencies, but they may begin to do so also as a collectible, and coins related to some iconic events on this market could become a target for that kind of collector.