The Rupee is Kantebury's currency. It is backed by Ivory.
In the beginning, the nation of Kantebury had a currency only noted as pounds. Its levels (or denominations) were silver, grain, iron, and wood. Taxes, land, and other items had costs which reflected one of more of these denominations. Jhardhandi was known for a bartering system, but the royals were very fond of Ivory. Most royal trading was done using ivory, or gem stones. Often Emeralds, Rubies, and Topaz were grouped together into a category called "Rupees" after the superstition of little men who eat gems in the mines and jungles. The herdsmen and nomads just used a bartering system.
During the expansion, trade among the empire was tough. Although the economy boomed for Kantebury, their seized nations experienced an economic downfall as high taxes and sanctions and unfair trades and barters meant Kantebury was cheating them out of mass wealth. It was after the halt of their expansion, Kantebury saw that their empire would crumble into poverty and economic disgrace if something didn't change. Advisors were sent out into the land, and determined that a universal payment method was needed to sustain balance. After years of discussion and trials Kantebury established a pound system in Kantebury that reflected the empire's economy. The Rupee was established in the new Jhardhandi which reflected the Royal's wealth, which was still vastly weakened due to the economic crash. This new method was useless in the newly forming Kwazulite and Kantyre colonies, however.
In 1850, the royal Emperor of Jhardhandi took power, a first in the Kantebury Empire. Using the remaining wealth of the the Jhardhandi family, he tied together the vast wealth of the Empire into a single, set system. Using the rarest resource that Kantebury had to offer, the very valuable Ivory, and used the reserve of government Gems to buy out as much of the material as he could. He then used global demand for their materials and Ivory to raise the buying power for Kantebury. Establishing the new "Rupee", this monarch turned the buying power and the economy universal across the vast empire. they saw immediate results. The growth of the Rupee surged the empire into a new era.
Currently, the Rupee is not the highest valued currency in the world, however it does have serious global buying power. Internally, the Rupee is broken down into lower denominations, the half Rupee, the quarter Rupee, and the tenth Rupee are popular coins used within the Empire.