Honestly the fakes are getting very good. They are putting holset casting numbers in, using holset tags, and laser engraving parts with holset numbers. The only ways we have found knockoffs was by the box which will be Holset but have chinese all over it, the quality which is where they make mistakes like not cleaning shavings out of the bearing housing well enough, the bearings which tend to be made of a low rockwell material, or by the distributor. We signed up for an online database which shows major supply chains within the industry. We type in a company and it tells us if they import, how much, and where from. Shocking to say the least.
I doubt it is a knockoff to be honest. The remans typically end in an RX from Holset. Are you sure this is not a titanium compressor wheel? The cast titanium wheels do have a small amount of pitting from Garrett and Holset.