Ranging back to the year 600, and with the help of MBNA, we unveil the downright strange methods of trade that took place in the past.
600-200 BC
According to MBNA: If someone draws out a knife instead of a wallet you might think theres serious trouble brewing but in ancient China, during the time of the Zhou dynasty, knives and spades became an early form of currency. Later, in the 8th century, the Chinese adopted a monetary system that replicated this trade with tiny knives and spades. Your geographic region defined whether you used knife money or spade money.
27 BC
In the era of the Roman soldier, salt was expensive and small quantities had a lot of trade value to the extent that salt rations became synonymous with cash. The legionaries liked their salaries and could carry it and use it as currency as well as a food supplement. MBNA suggested that a barber in ancient Rome would have to shave 13 customers to afford one dry litre of salt.

500 AD
There’s a tiny island calledYap in the Pacific Ocean. While there’s no gold or silver on Yap, hundreds of years ago, explorers from Yap found limestone deposits on an island miles away and carved this limestone into huge stone discs. They then brought it back across the sea on their small bamboo boats. Heres the clincher: it’s over eight tonnes and measuring 12 feet in diameter named rai stones and the risks undertaken to produce and move each stone actually increased their value.
1200
The cowrie shell has been used as an exchange currency longer than gold and silver, by more people and over a greater geographic area than precious metals. TA product of the Indian Ocean, it is impossible to counterfeit. That didnt stop the Chinese from manufacturing their own cowries in metal when the supply of the real shells grew short.
It has been used all over Africa and Asia and has been a staple of trade for so long that its image forms the Chinese pictograph for money. In central Africa it was still possible to pay ones taxes in cowries in the early 1900s and to purchase small items at market well into the 1950s.
1700
Captain James Cook first set forth the customs surrounding whale teeth in his voyages through the Fijian and Tongan Islands in 1774. The Fijians called the whale teethtambua. It served as the principal store of wealth among the Fijians and were considered precious articles to receive in gift or barter exchanges. In the 19th century a single whale tooth commanded sufficient value to barter for a large canoe.
Read on to find out about the bank that accepts parmesan cheese.
1800
MBNA claimed the fur trade on the American frontier saw native tribes trade their beaver and deer pelts with the English for metal tools. “One good quality buck skin was worth between $1 and $2, hence the slang term buck for a dollar,” it said. “A beaver pelt worth $2 back in 1837, works out at about $50 today. Squirrel pelts were also a popular means of exchange between Russians in the Middle Ages. In fact, the Russian people werent so severely impacted by the Black Death, because they routinely skinned most of their flea-bearing rodents.”

2004
In some federal prisons in 2004, something intriguing happened after smoking was banned. Inmates aren’t allowed to hold cash, but once an inmate buys something from the commissary he can use it as currency, assuming it is accepted as the coin of the realm. Prior to the smoking ban, cigarette packs had been a popular unit of value once they disappeared, mackerel packets appeared as a stand-in.
2007
“If you’re out of cash but have a few pig tusks lying around, get yourself down to the Tari Bunia Bank on Vanuatus Pentecost Island,” MBNA suggested. “If you can get your hands on a curly pig tusk the more loops the better you can pay a deposit into the bank. The bank is said to be guarded by spirits and snakes, which might be the reason it’s never been robbed.”

2009
The vaults of the regional bank Credito Emiliano holds 17,000 tons of parmesan cheese. The bank accepts parmesan as collateral for loans, helping it to keep financing cheese makers in northern Italy even during the worst recession since World War II.
2011
Coins with embossed Star Wars characters like Darth Vader, Yoda and Princess Leia have actuallybecome legal tender. Shops on the small Polynesian island of Niue 1,500 miles off the coast of New Zealand will now accept the cash for everything from food to clothing.