You would need to be more specific and what catalogue you are referring to.
I just got a great #11, the 2sh, from Greg in the mail. Does anyone out there have copies of #12 - #15, 5sh to 2 pounds, that they would be able to show a scan. The higher denominations of the early Australian stamps are very expensive and obviously very hard to find! A scan would be nice, to show that it is possible!!!
Edit: Scott numbers, 1913 Kangaroo series
re: Early high denomination Australian stamps
You would need to be more specific and what catalogue you are referring to.