RE:RE:RE:RE:ES LIKES QH"I don't think the intention is necessarily to have a gold backed currency that can be interchangeable with gold itself per say."
Then what's the point? Some country says they have a gold-backed currency. Some other country presents that currency, which they may have obtained by trade, and asks for gold because at this time they may need or want it. They are told No, you can't have gold. So they may just have paper, (like when you go to a bank, exchange paper, for ... paper of a different denomination, or maybe base-metal coins) or maybe just keep the paper, or flog it off to some other country at a discount.
If it's not convertible, it's not gold backed. It is mandatory that it be convertible. Country A could have 50,000 tons of gold and print money forever. If people take that money, and can't redeem gold for it, there will be no confidence in the currency; it's still just fiat money.
The gold backing/convertibilty is what provides the confidence.