Are these wheels authentic AMG's, and if so what are they called?
Or are they replicas?

Do they have a part number cast on the inside of the wheel? If they don't, they are likely replicas.

These are the only pictures i have of the wheels, and I can't find any other pictures of this model on google either, so i don't even know which model they are.

You’re looking to by these wheels? If so, ask the vendor to photograph the part numbers on the backside of them.

doesn’t mean the wheels are rubbish if they are reps, just means the value will be affected.

Okay will do that! Thanks for your help.