Found this 9" Wagner cast iron pot on craigslist for $30.
The lady I bought it from, said it was her mom's and it has been around ever since she could remember. It is at least 60 years old. It took about an hour for me to get it in the shape you see in the pictures below, using a 7" handheld angle grinder with a wire brush. After seasoning it looked like new.
22.5 WSM, 120 Gallon Offset, Weber Performer, IQ-110, ET-732