The unmarked skillet is a Wagner - one of those made for and sold thru Sears. They are the same quality as the contemporary 1950s Wagner skillets. Should have an "8" on the top of the handle and there is usually a letter near the edge of the bottom from "A" to "X" denoting date of manufacture - The very first ones did not have a letter.
Also the hole in the handle is the right shape and there should be a "scoop" on the underside.
I had several of these and recently sold the last one a #12, 14 1/2 inch skillet. They do usually have a fairly nice milled interior bottom that is fairly smooth. Not as slick as the Griswolds from earlier decades but much better than the ones made later.
