Geraldine James was 26 in Dummy when she played the character 'Sandra'.
That was over 46 years ago in 1977.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 73, and has starred in 60 movies in total, 58 of those since Dummy was released.
In Dummy, I think Geraldine James looks: