Speaking of KGV varieties, I just found this one this evening. I had actually thought it was a tiny sliver of white paper stuck to the front of the stamp, but when I checked I found it wasn't. It's a pretty conspicuous gash, so, I would assume, it's been noticed by someone before me and probably listed. If anyone (hi, Aussie Al!) happens to know what it is (incl. CV), please honk!

Detail:

It also has a damaged 'L' in 'AUSTRALIA':
