They all mostly seem to be. Just like mine in post 20 above! Must be good shavers to be so honed.
Kindov like most old Spikes we see!
As to the wider one, it seems telling that they were a much more hollow blade than the upper 1/2 ones we see a lot!
Look at the blade in post 7. (Not the scales, Please?)
Good, even width on that one too.