Griswold Vintage 20 Cast Iron Skillet. The item "Rare Griswald 20 Vintage Cast Iron Skillet" is in sale since Sunday, March 8, 2020. This item is in the category "Collectibles\Kitchen & Home\Kitchenware\Cookware\Cast Iron". The seller is "btlea310" and is located in Estes Park, Colorado. This item can be shipped to United States.