The new Apple is the huge margin of benefits Apple, and the recycling Apple.
Look, I purchased an Iphone SE some months ago, on an Apple Store, and just when I opened it, I saw two marks in the frame of the Phone, as well as an evidently used SIM tray, with signs of being used.
Obviously I paid for a new, pristine iPhone, not a refurbished one, so I exchanged it for another one and this was perfect.
I will not accuse you of having any problem, because you pay for a new, perfect, pristine device, moreover, you are paying a premium price because Apple, you know.
So, that said, I have to admit I don't see any mark on those photos. But I have photos of my scuffed SE and it is also pretty difficult to see them.
If they are barely noticeable, I'd keep it, but if they are pretty visible go and exchange your laptop. You have the right to own a perfect device, because you paid for it.
Edit: OK, now I see it, it is like a circle. Try to wipe it with a soft piece of fabric, and a bit of water. If it doesn't go away, you know what to do if you are in your 14 trial period.