I guess he is around my age, 50ish. But, I figured 70's stuff should be considered vintage. He doesn't. But when considering the collectors market, I guess there is some sort of cut off, or guidline.
I have an old Victrola 78 wind up record player. I am very proud of it because it is a unique and well preserved item. One day an older lady came in to my restaurant and said "What do you want with that old piece of junk?
We threw out a few of those years ago".
A friend of mine grew up in small town Quebec, on the family farm. When her family started making more money than mere survival, in the 1950s, they splurged on brand new formica furniture. They got rid of all the "old junk" by burning it in the woodstove.