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Oh yes I didn't notice the date code. If they really are so recent it should be easy to trace them back to the manufacture plant. Can you ask your distributor/reseller for any tracing information they have? If you used an official distributor they have all that information and it should be easy to check if they are fakes or not.
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I am fairly certain those are counterfeit. It looks like the top markings are black topped. Pay close attention to the indent on the middle part. You can see where the black top coating is spilling into the indent.