Australian banknotes have never had the date or year printed on them.
To get an approximate year, you would need to know the names of the Governor and the Secretary as printed on the notes, the serial number, the denomination of the note and possibly details of the design.
Since 1993, the year of printing has been a part of the serial number as the new polymer notes were introduced, for example, a serial number beginning with "AA 95" indicates that the note was printed in 1995, "JF 09" indicates that the note was printed in 2009.
The last two digits of the year, are the first two numeric characters of the serial number.
No.
Such a banknote does not exist. The Australian One Hundred Dollar note was first issued in 1984.
The current Australian Five Dollar note features Queen Elizabeth II on the front and a view of the new and old Parliament Houses on the reverse.
I think not, whoever she is.
All earlier Australian decimal banknotes remain legal tender in Australia even though they are no longer in circulation. You may have problems getting a shopkeeper of tradesman to accept an old banknote though. The Reserve Bank of Australia advises that old Australian banknotes can be presented at the Reserve Bank of Australia and most banks and exchanged for an equivalent value current Australian banknote.
Enid Lyons has never appeared on an Australian banknote.
The Australian Fifty and One Hundred Pound notes were withdrawn from circulation in 1945.
No. Captain Cook has yet to make an appearance on any Australian banknote.
You could take it to a reputable coin dealer or advertise it on eBay.
There is no documented evidence that anybody has found an Australian Five Dollar note without the signatures. Assuming that your Five Dollar note is a legitimate Australian Legal Tender banknote and it also includes the Legal Tender declaration and a serial number, it would be very rare. Any such banknote should not have got past the quality control at Note Printing Australia.
There has only been one Australian banknote that had the same faces on it for over 20 years and featured a "her". The original paper Australian Five Dollar note released between 1967 and 1991, had Sir Joseph Banks (Botanist) on the front, and Caroline Chisholm (Philanthropist) on the back.
Australia has never produced a 15 (anything) coin or banknote.