A watch could carry value when money could not

Cash is useful only if the person receiving it trusts the currency and can spend it. Behind enemy lines, that could be a problem: local money might be unfamiliar, restricted, or worthless outside the area. A well-known luxury watch offered another kind of payment—an object that could be passed directly from one person to another.

A Rolex’s value came partly from its name. Someone who did not share the wearer’s language might still recognize the brand and understand that the watch could be sold or traded later. That made it a form of portable, transferable wealth: instead of exchanging one currency for another, the wearer could offer an item with value in its materials, workmanship, and reputation.

The tradeoff between portability and certainty

Wearing the watch kept it close and avoided carrying a conspicuous roll of cash. In a desperate moment, it could serve as a bribe or be exchanged for transport, shelter, or help. Its usefulness depended on the other person believing it was genuine and having a way to trade it onward. A watch was not as easy to divide or spend as cash, and its value could vary with condition and local demand.

That made it less like a universal banknote than a compact reserve of bargaining power. The wearer could not know exactly what it would buy, but in a place where ordinary money failed, a recognized object might still open a door—or buy a way out.