some sturmey archer hubs for raleighs are like that as well.
these hubs are easy to tell by the one piece nut, instead of two on each side.
the hex nut goes on the outside of the fork, the round one is cone adjustment, there's no lock nut.
most all modern ones are like this with one nut for cone adjustment, one nut to lock the cone nut in place and another nut that goes on the outside to hold the wheel in place.
