56 plate 330i cam scoring question

[White-Noise]

Hi guys, I went to see a 330i touring yesterday. The car is on 108k with full history, largely main dealer. Car is in great condition looks well cared for and drives without any issue. Engine sounds fine and pulls fine.

I looked in the filler cap and can see a mark on part of the cam. I cannot feel any difference if I run my nail across this. I don't know if this is an issue or something to worry about, has anyone seen this before?

I will try to speak to a specialist today. The car checks out otherwise this is bugging me so I need to understand. I would like to think I can treat the car well and add another 50k to it.

Thanks

[White-Noise]

[White-Noise]

Thanks Bor!