I was doing a routine inspection of my violin today and got to wondering about something... hoping someome more knowledgeable can clear up my curiosity...
My violin has these black marks all around the top edge of the ribs where the top plate is glued on. But not anywhere else. Is this discolored glue residue? Varnish? Lead? Just was looking closer at things and was wondering what those marks were from in my violin's past.
Here is a photo
Thanks for clearing up my curiosity!