Any body have any indepth experience with Griswold cast iron pans? I have a few of the block letter Griswolds and have a pan that also exactly matches but has not emblem that I can find. Did Griswold make any pans around this same time period that were not stamped with the Griswold logo? The handle doesn't seem to match the 1865-1909 "Erie". But, know for a fact that the pan is pre 1925.