My favorite older woman statue is "She Who Was Once the Helmet-Maker's Beautiful Wife." http://www.rodin-web.org/works/1884_helmetmakers_wife.htm
It is a statue by the famous sculptor, Rodin, the creator of "The Thinker". I am an older man and I nominate men over at least 70 years of age for advanced beauty detection and celebration. I searched my own blog for the phrase "she who was once" and I found the post of June 15, 2011, titled "Old is Beautiful". https://fearfunandfiloz.blogspot.com/2011/06/old-is-beautiful.html
I was impressed and surprised by the passage in David Eagleman's book "Incognito" where he is discussing human instincts. He uses the reaction of young men to young women of certain appearances as an example of basic instinctive reaction, built into our species and leading to reproduction. He contrasts that reaction with humans' reaction to a well-developed female frog that stirs a male frog deeply but leaves men completely unimpressed.
When thinking about beauty in places where it is often unnoticed, it can help to look at sources discussing "wabi sabi", a Japanese approach to beauty in old, used examples. Many discussions emphasize searching for beauty in "imperfections" but in my opinion, the difference in beauty between a 70 year old and a 17 year old comes FROM any marks in the 70 year old that stem from greater age. Wrinkles, scars, results of work and striving and surviving give weight and beauty, often called "character", to the older person.
It is a sort of arrogance or fashion to know beforehand how and what is beautiful. Taking a good look, with fresh eyes, can reveal deep, gripping beauty that is overlooked often.