Looks like someone has been tightening those nuts with a chisel, a few pictures back. Always use the correct tool for the job, eh? New ones aren't very dear fortunately. In fact I think last time I bought a hub bearing kit for an axle of that vintage it came with some, as well as some odd shaped felt washers that didn't seem to fit anywhere. If needs must however, it's worth filing the burs off secondhand hub nuts so they apply pressure all the way round not just on the high spots.
I've not seen as many balls as James (said he without a trace of innuendo) but in my experience the thinner ones are genuine and the thicker ones are Britpart specials made of really crumbly metal with bits of coke embedded in it.[/QUOTE