Since 2017 Ebay seller miesbacherhof from Lehner in Germany has been trying to sell this Indonesian diplomatic plate. This is not a genuine plate and it is either a complete fake, manufacturer’s sample, very well repainted private car plate made to look diplomatic or a made-to-order special.
The registration is sort of like a diplomatic temporary plate but it has been confirmed by an Indonesian collector that this type never existed. This is not a genuine plate at all.
Be very, very careful with any plate you buy on Ebay. Check on websites, join Europlate to know what plates from all countries look like or ALPCA for US and territories plates. Don’t believe an Ebay seller just because he says it is a genuine plate.