The Vollrath handle is just so distinctive, yes. Also the number on top of the handle.
What I believe is that Vollrath evolved, and the unmarked skillets were quite likely from the end of the CI production era... in the 60's... JMO.
I think your little one is Vollrath.
I am not fond of the later Vollrath's. Somewhere around here I have a #8 that I call my Fugly skillet. Heavy as all get out, and not the greatest Casting... but I think I gave $2 for it. :P I also have a stack of some 3's sitting... somewhere... maybe I'll find them soon out in the Garage, as I am trying to find my 'lost' stacks... ::)
PS... I very rarely pay any attention to any markings on the underside of handles, numbers or letters, because other than a pattern mark, the purpose will probably never be known, except to the manufacturer... :)