Age on a C.V?! Who does that. No one.
That's true in America. But in much of the world (including most of Europe), a CV is expected to include one's age, marital status, and number of children.
A European employer may also expect to receive a photograph, from which the applicant's race, weight, and physical attractiveness can be judged.
More information here: http://jobsearch.about.com/od/cvadvice/qt/cveurope.htm