Finding numeral cancellations on postage due stamps is quite a challenge.
Freeman illustrates 8 numerals in the book: 480, 515, 624, 775, 811, 1128, 1133 and 1584. These are all on NSW postage due stamps.
I have found 153, 203, 730, 786, 1615 and 1874, all pictured below.



All but the 1874 are also on New South Wales postage dues.
The 1874 (Hazelbrook) is on a Commonwealth postage due. This is the only instance of its kind that I'm aware of.
