Why nations print cash outside their boundaries
Last week, the Liberian government announced it had lost $104m (£79m). This wasn't through any bad investment decision or some accounting fraud, the money - in cash - had literally gone missing.
The banknotes had been ordered by Liberia's central bank from printers overseas and had disappeared after passing through the country's main port and airport. The government is now investigating.
Meanwhile, last month Indians expressed outrage on social media about printing money.
A report in the South China Morning Post claimed the State-owned China Banknote Printing and Minting Corporation had won a contract to print Indian rupees, prompting concerns about national security.
India's government denied this, saying it was "baseless" - it actually prints all its currency in four high-security presses.
But both these cases have raised the question of whether we should care where our money is printed. Is it common practice?
Some countries, like India, do manufacture all their cash at home. For example, the US is legally obliged to print its banknotes within its territories.
But for most it's actually a common practice to print some of their money abroad, while others like Liberia don't even have their own mint.banknote producer De La Rue estimates the commercial print market makes up 11 per cent of all banknotes produced. The BBC contacted a number of money manufacturers, all of which refused to disclose exactly which central banks they produce money for. Many governments don't like to talk about it either.
"It becomes an issue of nationalism," says Duncan Connors, an expert in the history of money at Durham University. Why don't countries do it themselves? Basically, it's expensive and difficult to do.
Image copyright Getty Images Image caption The Solomon Islands outsources its currency printing
The companies involved in printing notes have been in existence for a few hundred years. They have specialist technology and developed credibility on security.
De La Rue began producing banknotes in 1860, first for Mauritius and then elsewhere. It manufactures the new polymer Bank of England fivers and tenners.