How to spot Rowe counterfeit parts?

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One of the reps in the Rowe International booth, at the ICA Meeting, told me this tip.  Not really sure if it is true, but I guess I need to find a new service tech.  The belts on the underside of the BA50 bill acceptor should be green.  If the belts are black that means that the belts are not Rowe belts.  It sounds good because I have some with black and some with green.