Grace Kelley would have been my favorite for the time period. She was before my time but I remember watching her in several older movies and thinking what a classy and strikingly beautiful woman she was.
A friend of mine met Grace Kelly at a wedding and when he first saw her he literally gasped at her beauty.
Personally I always thought the young Elizabeth Taylor was over the top beautiful. Whoever had a face like that? And for overall head to toe - Sophia Loren.