In Wagner’s Catalog No. 20, the National line of hollowware is described as having the objective of filling the demand for a good, low-priced utensil:
“Although not equal to our regular skillet, it is neat and well finished, and equal to many so-called extra finished skillets which certain manufacturers are offering.”
At a convention a few years ago (Chattanooga, I think) John Wright made the statement during his presentation that an early Wagner catalog suggested that all of their wares were marked with the Wagner name. We know that isn't exactly correct when you consider all of the unmarked Wagner gem pans. Maybe one of the Wagner collectors can add something more definite.
John also gave a presentation on the evolution of handle styles, but I believe it focused on Griswold's handles.