Which US president appears on the one-dollar bill?

George Washington, and the note is the most-printed piece of currency in the world - around a third of all US notes produced are ones, and they last about six years because they are cotton and linen rather than paper.

The United States has repeatedly tried to replace it with a coin and failed every time. Coins last decades and would save a great deal, but Americans will not use them while the note exists, and every attempt to withdraw the note has been blocked - partly by the cotton and paper industry, and partly by senators from states that mine the metals or produce the fibre. Vending machine operators want the coin; the crane paper company that has supplied the currency stock since 1879 does not.

The reverse carries the Great Seal, including the unfinished pyramid with an eye above it, which has fed two centuries of conspiracy theory. It was designed in the 1780s and the eye of providence was an ordinary piece of contemporary iconography; the pyramid is unfinished to signify a country still being built. It was put on the note in 1935 at the suggestion of the Secretary of Agriculture, who liked the Latin motto - novus ordo seclorum, a new order of the ages, which is where the phrase new world order gets borrowed from.