AUSTRALIA. Reserve Bank of Australia. 100 Dollars, 1984. P-48s. Specimen. PMG Choice Uncirculated 63 EPQ.Specimen. Sir Douglas Mawson pictured at center of this stunning high denomination. Great color and bold inks. The reverse shows John Tebbutt pictured in front of an observatory. This is the first we have handled for this type in Specimen form, and one of only 3 certified by PMG according to their current population report.