Is this Minolta lens fake?

Started 3 months ago | Discussions thread
OP Altmeta New Member • Posts: 5
Re: Is this Minolta lens fake?

Hi, the lens was returned back to me today. Upon inspection, I noticed a circular mark in the middle of the lens that wasn't there before. Attempted to wipe it off using some breath and lens tissues but no avail. It seems to be a groove rather than a mark. Does it affect the use of the lens or is it a cosmetic defect? I don't want to cause an issue to the buyer unless it's impairs the functionality. Also, any ideas what may have caused these grooves?

Thanks again for everything!

Photos below:

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