-lol- sorry to scare ya - i did notice that notch, although still wasn't sure - i just remember from my 6HP tinnie days when i was a kid that the prop faced the other way to what it is in the picture =)
I couldn't help it - i did a google image search and all the props face the other way?
But it looks like it's the right way round in this shot?
i've seriously confused myself -lol-