Cast iron help?

I was given this pan by a friend that knows I would use it. It measures 18 X 11 in the cooking area. No markings on it except a #1 stamped on the back side of one of the handles. Anyone have an idea who made it?



or t n ttt for short (tnttt.com)
https://www.tnttt.com/
Zollinger wrote:That rusty old thing. Looks far too rough to ever be used again. Just bring it to Cooler Near The Lake and I will dispose of it for you.