610 8 Cent Krieghoff - Possible New Variety ?

It doesn't show up too well on the pic I attached, but it's fairly obvious on the physical copy.

Found this beauty on a cover...it's got the hook on the '1' with the broken door frame.

I just picked up a UR corner block and in pane position 9, with the broken door frame, I can see a very small line about 1mm below the centre of the red sleigh. This isn't mentioned in the list of other varieties in this thread. I'd show a pic but my scanner won't even pick it up. Does anybody else notice this on a position 9 stamp? I really have to look closely to see it but it's definitely there...

I was able to capture the line using a magnifying app on my phone...