I found this coin a while back, but I like it so much it bears a repeat. Take a close look at distortion of the kangaroo and lettering. This particular coin reminds me of the US 1890
Indian Head cent DDO, with similarly blocky serifs and overall inward displacement. According to Chuck Daughtrey, this is a class VI distended double die--thanks for that attribution!

Compare to a normal 43-I reverse:
