Not wishing to brag, but I often feel I could pass for 5 - 10 years younger. I've never asked anybody this question and I'm purely using the judgement of my own eyes. If I go back in time 39 years to when my late Dad was the same age as I am now (53), I see a man in early middle age with a full head of black hair - some greying - but a rather lined face and seemingly expanding ears! I, on the other hand, have a lot more grey hair than he did but a much denser texture and no obvious facial lines. I've always had bags under my eyes but not Peter Woods proportions! My sister is 61 but she could pass for late 40s, in my opinion.
Maybe there's no right or right or wrong answer. I could have a skewed personal perception or perhaps we're all living longer and I'm seeing that played out at close quarters.
PS. The old man had, along with Mum, raised seven children by the time he was my age whereas I have no children. So, no parental stress!