This is what I was about to post. I just added these opening remarks after seeing Ambly’s posting of a quite similar response.
It’s difficult to compare people’s faces over a 40 year gap, however this is my take on it:
First the differences:
The older man’s nose appears wider; but his head is tilted back slightly, he is smiling broadly, and noses do continue to grow (a little) over time. All those things make a nose look wider in photographs. (Also - hope you’re not eating - repeated nose picking over many years can widen nostrils.) Otherwise his nose is similar, especially between the eyes.
The older man’s ears look bigger. On average men’s ears grow almost half an inch in 50 years. (So do women’s but they’re usually hidden by hair.) Otherwise the ears are similar in shape.
Now the similarities:
The eyes. Obvious, I think; you can imagine the young man’s eyes crinkling in a smile in the same way as the older man.
The mouth: in both photos, the upper lip trends downwards at the corners.
The jawline: Notice how in both photos his face is just very slightly asymmetrical, with the chin more on the (his) left side of his face.
Continuing the asymmetry, notice the way he holds his head in both photos, so that much more of his right side of his neck is showing compared with his left side of his neck.
Conclusion: a definite maybe. If it’s not the same man, it should be.
Cheers, Peter.