“As far as the crest is concerned. Don’t forget that Australia was part of Great Britain in 1959, so the crest would that of England. Not Australia. Seems to match this Coat of Arms on this building in England.”
That statement is false:
The Commonwealth of Australia was created on January 1st 1901. The Dominion was granted a distictive set of Arms by His Majesty King Edward VII on May 7th, 1908 (modified by HM King George V on September 19th, 1912.
http://en.wikipedia.org/wiki/Coat_of_arms_of_Australia
The State of South Australia was granted distinctive arms by HM King Edward VIII in 1936 (modified by HM Queen Elizabeth II in 1984).
http://www.premcab.sa.gov.au/emblems/coatarm1.htm
Their are two sets of arms for the United Kingdom of Great Britain and Northern Ireland (not England). one set is for use in England and Wales and also in Northern Ireland. The other set is for use in Scotland:
http://en.wikipedia.org/wiki/Royal_coat_of_arms_of_the_United_Kingdom
None of those coats of arms are on the Bonford doc.