I suppose Hong Kong dollars weren’t "money" in some legal sense. Authority would not accept them; times I went Earthside had to buy Authority scrip to pay for ticket. But what I carried was Hong Kong dollars as could be traded Earthside at a small discount whereas scrip was nearly worthless there. Money or not, Hong Kong Bank notes were backed by honest Chinee bankers instead of being fiat of bureaucracy. One hundred Hong Kong dollars was 31.1 grams of gold (old troy ounce) payable on demand at home office—and they did keep gold there, fetched up from Australia. Or you could demand commodities: non-potable water, steel of defined grade, heavy water of power plant specs, other things. Could buy these with scrip, too, but Authority’s prices kept changing, upward. I’m no fiscal theorist; time Mike tried to explain I got headache. Simply know we were glad to lay hands on this non-money whereas scrip one accepted reluctantly and not just because we hated Authority.