Hello to all forum participants. I have a couple of questions regarding an unused Griswold #9 Block/E.P.U. heat ring skillet which I just acquired. I believe this pan dates from the first half of the 1920's decade due to its under handle construction characteristics. In over 20 years of accumulating cast iron, this is the first unused Griswold skillet of such early vintage that I have encountered, while still retaining its original factory label. I have encountered a very few later period unused small logo Griswold pans that have retained their labels. I was wondering just how rare is it to find an unused 90 year old Griswold with a label? Due to 90 years of non-use, with no accumulated seasoning to protect it, its inside bowl cooking area has developed a scattering of spotty surface oxidation (albeit not actual metal pitting). To preserve the factory label (which I believe adds substantial value to this utensil) a complete lye bath clean up is impossible. The best I can do is carefully clean up only this inside bowl cooking area via lye and vinegar bath scrubbing. Regarding value retention, I seek opinions regarding this very limited type of clean up versus just leaving the entire pan alone? I welcome any and all input regarding these inquiries. Unfortunately my limited computer versitility prohibits pictures to be posted. Thank you for any opinions offered. Best regards, DON.