Scott, It seems as though Berger tied his Honey Bugs on the Mustad 3906 or 3906B. But I can't be sure. I was recently at the PA Fly Fishing museum where Berger has a Honey Bug display. In this display is a pack of Mustad 3399D hooks. These hooks are the same as the 3906 but is a light wire dry fly hook. So I'm just not sure.

Jim