From The Jack Kirby Collector #5 I give you Dr. Doom without his mask on!
Kirby did several of these drawings though none have ever appeared in a Marvel comic. I had planned a whole post on the evolution of Dr. Doom's origin but real life got in the way this evening so I must simply provide this one tantalizing image of what Kirby's idea was later on in his career. Look for that post in the near future.