Finally, after 10 days, countless power cuts and a drain of my energies, I get back to the Downey Head thread.
More specifically, I get back to the Downey Head on 'Piece'.....except it isn't on piece!

It's good place to get back into it I guess, although I cannot now remember all that I wrote before the 'Blackout' !

I went back again to check the overprint and cancel and I believe it still is as I said before, the the cancel is over the CA.
But it was at this point that I had to laugh.

I had missed something, something so simple it could have smacked me in the gob. But not only that, you all missed it as well, at least all those that had an interest in the thread and this interesting little piece.
It was staring us all in the face.
The stamp is not 'on piece'...at least not the kind of piece that we know. There is a number '212' under the stamp which I believe belongs to a Postmark book or Journal and which was copied from the original...it is simple copy paper and the whole 'piece' was made up by a collector......but NOT the guy who owns it !
I believe the stamp was postally used with a Krag Cancel and the [unknown] Postmark collector put this example on one of his pages. Your mate said the lines didn't match up perfectly and he was right...but actually they do.
Let me explain.
The Krag Cancelling Machine was invented by a Norwegian firm and put into use around 1906. I read a reference to the earliest Krag Cancel being 1906 although later found evidence of a use on British Railway stamps in 1905.
The roller cancel was made up of two double-circle cancellations and two Flags [of lines]. It was well known the the Flag lines did not mark the adhesive too well and some cities changed to a wavy line [dotted]. All early examples were from Eastern Europe, notably Russia. This, we could be led to believe, is why the lines didn't match as your mate said.
Wrong !



Now the embarrassing bit!
This is NOT a Krag Cancel ! It is but a poor imitation or maybe a later type. The lines you see on the stamp are also on the page under the stamp !

Theory:
The stamp was taken from a [most likely] beat up piece of paper [Australia House document] with a Krag Cancel and placed over the copied page with the lines [almost] joining up . You will notice the stamp is at an angle...the very same angle it was on the original document.
My attemps to find out if Australia House used a Krag cancel around the years 1912-15 on their official documents have so far proved fruitless. But not knowing for sure is a good reason to keep trying.
I have spent so long on this little piece it seems a shame to give up now !

Then of course there's the utter embarrassment at missing the obvious.........
Londonbus1