Any tips on removing marks from a panel stacked against another during installation?

[Rocksteady2R]

It happens occasionally, for sure and mostly negligible, but we re-stacked a pallet of panels and someone essentially dragged a frame over bit of glass on the panel below it. left a few streaks of what i think might be aluminum from the frame... I can't feel any specific scratches, though. But the markings aren't coming off, either, with spit elbow grease.

Anyone have a good way to get these markings off?

[sensij]

I'd guess you are seeing damage to the AR coating that isn't going to be repairable. The performance hit will probably be small.. if you put the panels into a SolarEdge or microinverter installation, you can look for it.

[littleharbor]

I have handled thousands of new and used solar panels and have tried everything I can think of to get those metallic skid marks off the glass. Nothing I have tried has worked. If somebody has a solution I'd love to hear it.