Ebay seller moto-aura from Poland sells replica WWII licence plates. That is fine; he advertises them as replicas and offers to make any particular plate on request. Very nice for collectors of WWII vehicles.
The danger is that some of the dishonest Ebay dealers will buy them, distress them and then sell them on as the real thing.
These are the ones that I know that moto-aura has sold or is offering to sell.
Be very careful of WWII German military plates as there are several fakes on the market.