I was wrong. Ish. Was chatting through the Patina thing with the gingerman's wife last night, and she very gently put me right. Patina is what I was talking about, but is specific within it. More commonly the green stuff on copper and brass when they grow old, it could also be the residues deposited over a long period of time. Wordwise, its roots are in 'pan' and 'residue' which kind of says it all. What it isn't is that dip in the step, or that chip in the table. Give me a stick,I'll tell you the right end. And I'll be wrong. (Make it an old stick).
Is there a word for what I was wittering on about? It's more than age. It's more than wear. It's the visual impacts of time through human use. It's the evidence of us in stuff. If there isn't a word we should make it up.
Then I can misuse it.