Challengers of the unknown - A new set I got this weekend

I sell comic books for a living, this means I constantly buy collections from people who are looking to sell for cheap, relatives getting rid of the late father's collection, people looking for new hobbies or just wanting some space in their storage room and then, I sell them individually to the collector's clients I have.

This weekend I got a new package and damn, I'm so happy I bought this from an old man in Alabama:

Challengers of The Unknown, created by Jack Kirby and published by DC - back then called National Comics began in May 1958! The oldest one I got is the number 37, from May 1964.

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