In July 2018 Ebay seller affenbudda from Flußbach in Germany was trying to sell this Qatar plate. He says it is genuine and used. Sorry but very wrong.
It is certainly not genuine and has never been used. It is a manufacturer’s sample from when they were trying to get a contract in the 1980s and has never been outside Germany. They made them in various colours with the same number and a black on yellow one even appeared in the manufacturer’s publicity.
The plates that Qatar actually used never looked like this.
ALWAYS check what you are buying against photos of genuine plates…there are many on the internet, on collectors‘ websites and the various photo archives of plate societies.