Christoph Waltz was 19 in Der Einstand when he played the character 'Günter Vesely'.
That was over 46 years ago in 1977.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 66, and has starred in 108 movies in total, 102 of those since Der Einstand was released.
In Der Einstand, I think Christoph Waltz looks: