Challengers of the Unknown # 16 in  Near Mint Minus  condition.  Ex CGC 9.2. 1960 vintage. Beautiful copy  with  off white to white pages.  There is some very light writing top of splash page. Sharp,supple and glossy.  Cent copy. My grading is strict but no quibble refund if not satisfied. Combined postage for available for multiple buys. Please ask for details.