fake stops being an applicable term as soon as people start agreeing to accept it, which the article says happened. Then it's as legitimate as anything like Bitcoin.
Do you want physical cash? Well, of the bank is printing its own, they can hand out whatever they can print.
If you expect fiat currency (e.g. USD) or precious metals, then withdrawals are all limited by what the bank has on-hand, or can get quickly. Assuming this is what you’re asking about, it would be a “run” on the bank, they’d close up shop for the day, and it would affect the faith the population has in the monetary supply.