These can be nice pans when you find one with a better casting; they are not all cast withought imperfections. No relation to Favorite Piqua Ware, they were made by the Columbus Hollow Ware Co, Columbus, O.
I've had several of these Clark. Can you post a photo of the bottoms of all the handles in one photo that also shows where the handles are attached to the pan? It would be great if some new photos can be added to our foundry pages since this may be the only chance anyone will ever get to see a whole set. I expect that you have all the sizes made. A 6 would be possible but the style of these pans suggests an 1880's period of production which is pretty much before No.6 sizes were being made. Note the slightly raised skillet rim where it is raised a bit above the handle. Early ERIEs are like this (first series only). Clark, is the rim raised at the handle on your No.8? Do all of the pans in your set have the same exact features and details or are there some differences? I've never seen a full set of these FAVORITEs.
Thanks,
Steve