Yes — Griswold and Wagner pieces in good shape resell well above thrift prices for their smooth surface and collectibility. See live comps below.
How do I identify valuable cast iron?
Flip it over: maker's marks (Griswold, Wagner), a smooth machined cooking surface, and a flat, crack-free base are the tells.
Want to sell Vintage Cast Iron (Griswold & Wagner)? How do I know what it's worth?
Run the live comps above for a current market read, or scan your exact item with the free BIDonBOT tool to get sold-style prices and an instant keep-or-sell verdict — no signup.