If you could pick one actor or actress, to never age, to do one period of their career, ad infinitum, who would it be?
I’d pick Clint Eastwood, and his spaghetti westerns. The Stranger is the coolest character ever. Never looks for trouble, but it is drawn to him like moths to a flame. He’s always quicker on the draw, always smarter, always opputunistic. All women want him, all men want to be him.
frozen in time even… if a mod could fix, I’d appreciate it. 
*I reported it for you. *
Clint is not bad, but Sean Connery as Bond in the Sixties is the suavest, most manly man of them all. He was sophisticated and rough and tumble. Intelligent and the ultimate lady’s man. He ooze sex appeal to the point where decades later at age 60 something he was voted the sexiest man alive again.
You knew he could win any fight and he was the perfect Bond, the most enduring character in Movie history.
Jim
I would say Robert Redford in the 70’s. He had a great string of movies (All the President’s Men, The Sting, Three Days of the Condor, The Candidate, and Butch Cassidy and the Sundance Kid, which I’m counting even though it was in 1969). And he was also the most gorgeous man ever in that period.
Mae West in the early 1930s, before she became a Red Grooms sculpture of herself.
The Superman Christopher Reeve
The pre-Superman George Reeves
John Wayne never seemed to age, at least, his character always seemed to be somewhere between 35 and 60 up to the Shootist.
Maybe Jimmy Stewart in his “everyman” phase in the '30s and '40s, or Cary Grant from the same time period. No one’s been able to pull it off in quite the same way since.
Gregory Peck from his To Kill A Mockingbird days.
Yummmm.
Paul Newman circa “Long Hot Summer.”
Humphrey Bogart in his Raymond Chandler years
Humphrey Bogart in his Sam Spade years
(sorry if this double posted, I caught my error mid stream)
Although he’s done other good roles later in life, Harrison Ford could play action/adventure types forever at the same biological age he played Han Solo and Indiana Jones.
Thanks for the title fix. 
Sean Bond is a good one. So is Action Harrison Ford.
I’d also nominate Tracy and Hepburn together. Those two were electric.
Clint Eastwood in “Dirty Harry” (1971).
And the sequels too. Particularly, “Magnum Force” (1973), and “The Enforcer (1976)