His grandfather’s journal detailed a lifelong passion for collecting currency coins from around the world, a hobby cut short before the internet age. Arthur looked at the solitary silver coin in his hand. He felt an immediate, magnetic pull to complete the collection his grandfather had started.

Heart racing, Arthur added the gold coin to his digital cart. He double-checked the dealer’s return policy and authenticity guarantee. He clicked "Secure Checkout," entered his details, and completed the purchase.

Five days later, a discreet, heavily insured cardboard box arrived at Arthur’s door.