Normal course of events is the oil running off the piston and sleeve. Function of time.... after a week or two, there's no (or very little) oil there. Start it and you get metal to metal until oil once again coats everything.wonder if those scratches are about the piston cocking in the bore a bit, so the lower edge scrapes off the oil film?
Remember, on average, 70% of engine wear comes from start up. That's one reason a New York or London cabby will easily run a half million miles or more.... they hardly ever shut off.