Griswold Cast Iron Comal or Griddle Bottom

This image features the underside of a cast iron cookware item, specifically identified as a Griswold piece by the iconic 'Small Logo' circular trademark. The logo consists of a cross centered within a double circle, with the name 'GRISWOLD' positioned horizontally across the center and 'ERIE PA., U.S.A.' curved around the inner perimeter. Below the main logo, the text 'MADE IN U.S.A.' is discernible, alongside a pattern number typically found on such pieces. The surface displays a distinct 'pebbled' or textured gray finish, characteristic of sand-cast iron. This heavy-duty metal construction shows signs of aging through patches of orange-brown surface rust and light carbon buildup, primarily visible near the bottom of the logo circle. The concentric circular ridges indicate a turned or machined bottom typical of high-quality mid-century American cookware. Based on the trademark style, this piece likely dates from the 1940s to the 1950s. The craftsmanship is evidenced by the clear, though slightly worn, casting of the trademark and the precision of the grounding rings, which were designed to provide flat contact on stove burners. Despite the light surface oxidation, the structural integrity appears sound with no visible cracks or warping in this view.