Huge griddle

Found this at an Estate Sale this weekend, I have never seen one this big before. It measures 15" across and has a 14B and 2 gate marks on the back. It is pretty flat and thin for it's size. Anyone know anything about this thing? My guess is an old Lodge piece, but not sure. Also was it maybe for cooking over an open fire? It seems to big for a stove burner to get even heat.


Thanks for looking.
Steve


Thanks for looking.
Steve