Vintage GRISWOLD Cast Iron SKILLET Frying Pan # 6 699 A LARGE BLOCK LOGO READ. This piece of cast iron has been soaked in a lye bath for 3 days. And sprayed with vinegar/ water solution and scrubbed with a stainless scrubby pad to remove any remaining grime or rust then placed in the oven at 200 Degree’s for 10 min then removed and wiped down with Crisco shortening then wiped down so all residue removed from the pan then placed back in the oven upside down for 1 hr at 500 degrees.