Awesome. I was about to start a cast iron thread.
I acquired several pieces from a tenant for $25.00.
A square skillet, small skillet and a Griswold 12" skillet.
Not mine - but the logo is like the one pictured. After I learned what I had, I notice prices are all over the board on these things.
I cannot make out the very bottom, nor very top printing - Only Griswold and Erie, P.A. The inside is nice. A couple surface spots was all. Smooth and LIGHT. The weight has my wife in love after lugging around our newer stuff. It's probably daily wear, but hate to beat something up that may have real value.
How can I tell if I have a $50 skillet, or something else? OP - sorry for the hi-jack.
My current pieces are Lodge. My 10" has taken some time to get "non-stick" on eggs and whatnot, but I really enjoy cast iron.