No, not a WTF head, this style of combustion chamber was a bridge between Flatheads and overhead valve engines. The intake valve is located in the head above the piston, and the exhaust valve is located in the block next to the cylinder. It pokes up into the head in the recessed area behind the spark plug hole.
We spotted this cylinder head in the assembly room at JMS Racing Engines. It’s getting rebuilt to go back into a 50’s-era Willys. I’m not sure why manufacturers used this valve arrangement, perhaps it was less expensive to adapt a flathead design to incorporate one overhead intake valve per cylinder than it would have been to design a new, clean-sheet-of paper OHV block and heads.