One of the greatest investment portfolio is investing in rare and unique banknotes. The return can be very high. Investing in the right banknote require some knowledge. You must first have an interest in banknote collecting before making an investment. It is usually a long time investment. If it is a short term investment, you are probably trading them. Keeping banknotes is both rewarding and a agreat investment for me. Beware of fake banknotes whether in alteration of serial number ( if you are a fancy number collector ) or a rare banknote. It will be good to have them check with experts.

Do not end up keeping the fake banknote for years before you realised that it is a fake banknote. Usually when you are about to sell away the banknote, you will be in for a rude shock. If your banknote is a valuable one, do have it certify by your country's grading houses. It will be much easier if you intend to sell them away in the future.