i believe so, the egg skillet logo you will not find a 9 sk. I am always on the hunt for the elusive 4, 11 and 13 sk usa line. I would love to finish out this set and proudly place it next to my other completed giswold and wagner sets. i did have 4 early lodge, 4 only marked on the bottom with lodge in arc form. traded it for a 12 and 14 sk usa pair of skillets at a second hand store in yakima washington some years ago. i am going to keep scouring the web, this site, estate sales, auctions, antique stores, etc. until i find those pans. that is what i like most about collecting, the thrill of the hunt.