I really like this issue, and have posted bits and pieces in other threads. However, since I picked up a nice second copy, I'd thought I'd post and get some comments.
In 1937, Australia issued a set of stamps commemorating the 150th anniversary of the European Settlement in New South Wales. The three identical stamps showed Governor Phillip and his officers, mostly standing around, looking nice, and pointing. The 2d variety is ACSC 175, and a normal stamp is shown below:

The pointing man is shown here:

Note the difference with this closeup and entire of the variety known as "Man with Tail" variety, ACSC 175e (in my catalog). You should be able to see the tail quite easily:


A "retouch" was made to the plate to fix this "tail flaw". ACSC lists this as 175ea, and I found a version a few years ago, and just now found a second copy in an APS Circuit Book. Here is the older version:


It's a little difficult to see in this copy due to the cancel, but the big "smudge" is the best indicator. There is also a small horizontal line in that general area.
Here is the latest one just picked up. You can see the smudge, horizontal line, and just a small bit of the tail at the very top:


So now, I am missing a version of this stamp which is ACSC 175h, "Colour flaw adjoining tree above officer at right". I could be convinced in letting go of one of my copies of 175ea should someone contact me concerning 175h. Just saying ...