So I prefer the pre-Griswold Erie from the late 1800’s. Up until about 1960 the iron in those pans came from Pennsylvania foundries. That Penn state gray iron is an amazing cooking surface. You can find them on EBay, they’re not cheap but so worth it. Just Erie on the back is 1800’s, Griswold large logo is up to 1960 and the Griswold small logo goes to the 1970’s when Griswold stopped making pans.