Mike, all the patterns from Favorite were modified. So "Favorite" was continued to be made in Chicago at the CHF. BUT, the "Piqua Favorite" was not, so, it very well could be here that you have a ghost skillet, one where the "Piqua" came through in the pattern in spite of the modification. Ghosting is interesting because it shows that other manufacturers used other manufacturers patterns, acquired them. Patterns were, and are expensive, so they were valuable. So if one company wanted to change, it might sell its patterns to another foundry and this clearly happened from what I have seen, such as Wapak, it looks like they used a whole bunch of patterns, from Wagner and Griswold especially.