Many banknotes have their date of issue printed on them. This is not the same as an exact age of the note, just an indication of the series/design of the note. Many issuing banks include the signatures of the bank governor or government treasurer and as these people are replaced over time, these can be used to narrow down the issue dates.
Where notes do not have a printed date or signatures, the only recourse is to one of the catalogues of banknotes, which include pictures, descriptions and identifying marks of most world notes. The most common, general reference is the 'Standard Catalog of World Paper Money', published by Krause Publications, which is updated frequently.
Someone can find some Australian notes in Australia as they are used as banknotes there. Information and pictures of Australian Banknotes can be found online on a site called "AustralianBanknotes".
The collective noun for banknotes is a wad of banknotes.
Consult an expert in collectible banknotes; you'll find them in telephone directories and on the internet.
Plastic banknotes are more durable and more waterproof than paper banknotes, as well as being harder to counterfeit.
Banknotes normally last for 1 to 3 years.
No
currency or wad
Plastic banknotes were invented in Australia by the Reserve Bank of Australia and the CSIRO.
The Chinese jiazi banknotes are generally considered to be the first paper money in history, entering use around about 960 AD. The first European banknotes were issued in Sweden in 1660.
They still are
De La Rue PLC print all English banknotes under licence from the Bank of England.
New Turkish lira banknotes began to be used in 1 January 2009. During 2009, both old and new banknotes will be accepted but by 2010, old banknotes will expire.