Ebay seller shemiramis from Madrid in Spain sells a lot of Vatican replicas. No problem as he advertises them as replicas. However some other crooked dealers may try to distress them and claim they are genuine.
He also sells Spanish diplomatic plates that he says are used. Strange that they all look very unused, all have holes in the same places and all look like the same screw made the marks on the plates. A load of made-to-order specials and not genuine plates at all.