Roger Moore was 17 in Perfect Strangers when he played the character 'Soldier'.
That was over 79 years ago in 1945.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
In 2017 he died aged 89, starring in 124 films in his career, 124 of those after Perfect Strangers was first released. If he were alive today he would be 96.
In Perfect Strangers, I think Roger Moore looks: