Notes : This note usually has tiny holes. It was pinned to a Treasury letter which had signed by George T. Allen, Secretary to the Treasury. Notes that are still accompanied by this letter command a significant premium. There are approximately 30 notes [presented and circulation issues] that are thought to be in existance.

The Coat of Arms displayed on the front of the note was a continuation of the design used on the overprint of superscribed notes in the preceeding three years. There was no official authority for the design used - it did not conform to grants for the Australian Coat of Arms given on either 7th May, 1908 (used on silver coins from 1910) or 19th September, 1912. The ’unofficial’ design was used on all issues up to 1933.

Valuation : r1a – Mc1 # Collins/Allen Ten Shilling Banknotes
These notes only appear very rarely, so any valuations are largely hypothetical.

$1.9m for rare Australian banknote
The first banknote printed in Australia has become the nation's most expensive money, selling for a record $1.909 million [March 2008]. The historic banknote, with the serial number M000001, was printed on May 1, 1913, and presented to Governor-General Thomas Denman's daughter Judith by Labor Prime Minister Andrew Fisher. Ten shillings in 1913 would be just shy of $50 in today's money, which means the note sold for more than 38,000 times its equivalent face value.
Source : NEWS.com.au