Well for one any sort of auction/market like ebay, flee market, high end auctioneers, the like. They are trading precious metals/jewelry, other objects in which the buyer hopes to profit at some later point in the future. No one is out there buying XYZ widget in the hopes of burning their savings.
No one is buying an ultra rare watch for $10 million in hopes that one day it will be worth less.
No one is buying an ultra rare watch for $10 million in hopes that one day it will be worth less.