That was over 60 years ago in 1960.
In 2016 he died aged 91, starring in 109 films in his career, 108 since Spartacus was released.
In Spartacus, I think George Kennedy looks:
Spartacus scores 7.4 out of 10 on The Movie Database.
George Kennedy's first acting role was as 'Rebel Soldier (uncredited)' in Spartacus, released in 1960 when he was 35.
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