Cloud Defensive – dots on bezel

Hi all, hoping I can get a sense check on something please.

I just bought a Cloud MCH-HC Micro on eBay and I’ve noticed four tiny white marks on the inside of the bezel. They don’t bother me but I am wondering if all Cloud heads have these markings and what they could be for/due to?

I’m happy with the legitimacy of the light (everything works as it should, all the accessories were provided in original box etc and the seller has a ton of sales with 100% positive feedback) but just curious about these marks!