Australia 1½d KGV SG59a Cracked Electro?

A potential new find

I recently purchased a large holding of Australia King George V used heads (and they look wonderful in a stock book!). 

The varieties on the KGV heads can be a life-long obsession for collectors, and it becomes second nature to put every stamp under the glass for a closer look.

Whilst sorting, I came across this stamp. It's SG59a 1½d chocolate, large single watermark, perf 14. 

Obviously, the top left corner caught my eye. This looks for all the world like a cracked, if not broken, electro. A closer scan reveals that the top left corner of the stamp is slanted downwards. 

The stamp is intact, with no hidden or repaired tears.

I can find no reference to anything this dramatic in the Australian Commonwealth Specialists Catalogue (ACSC - King George V 2007).

If anyone has a significant number of this stamp, please check them. I would appreciate any information about the status of this flaw

GB Wattses Underprints - New Discovery?

Protective underprints, the printing of a company name on the reverse of the stamps, were used to prevent theft in the same manner as perfins.

Although predominantly a Victorian fad, two firms used underprints in Great Britain from 1904 to 1915.  The underprints were done over the gum, so excessive soaking of used stamps obliterates the underprint. Accordingly, they are scarce.

S&J Watts, a drapery firm from Manchester, used an underprint on the stamps of both King Edward VII and King George V. These underprints are listed in the Stanley Gibbons Great Britain Specialised Catalogue Volume 2.

Whilst soaking a batch of KGV on paper, I found these, somewhat poor, KGV definitives

Ready to consign them to the seconds bin, I turned them over and saw this