First dollars developed form German currency taller which was used till 1873. Some time later dollar let German Mark to be appeared. Afterwards Spanish coins were called habitually dollar. They say that the appearance of dollar sign $ took its origin directly from there. A long phrase piece of eight was denoted as crossed eight and finally it became the official mark of dollar.

As for the bank-notes appearance, we can say that dollars history counts a lot of changes. Some of the first dollars looked like denominations made on linen-cotton paper. One edge was uneven and the stub with the copy of monetary unit was kept at Mint and served for proving banknotes authenticity. Current dollar has more serious false protection but nevertheless one happened to meet false notes quite often.

The USA uses the notes at face value 1, 5, 10, 20, 50, 100, 150, 500, 1000, 5000 and 10000 but banknotes with value higher than 100 dollars are prohibited to take outside of America and one can see them very seldom to be used in ordinary life. Most of such banknotes are used only by banks or by juridical persons.

Dollar indeed is considered to be one of the most stable currencies. Most big financial companies and firms depend directly on situation and dollars rate is one of the most important factors. Its falling or raising can lead to the crisis not only in America but in many other countries.

For predicting unstable economic situation connected with drastic changing of the rate, the banks make dollars forecast which depends on many factors.

After Euro having been appeared, dollar seems to weaken somehow its positions but it is still keeping quite a big part of economic market. Despite of Europes dealing with Euro more and more, one shouldnt speak about decrease of dollars meaning towards financial structures and separate citizens.

There will be quite a long time during which it will be valued as stable currency not only at the territory of the USA but in other developed countries of the world.