Hi, perhaps is the 6,5mm. a Dutch blank cartridge. The exact length of a Dutch cartridge is 6,5x53,5R so it is possible. If it is Dutch, then 99 is the year of manifacture of the case and E is the code of the brass lot.
The color of the wooden point indicates for which weapon this blank is used.
If it is red, it is used for the Rifle M95, and the military name is “losse patroon No2”. Other possible numbers are “losse patroon 8, 10 of 12” with different colored wooden bullets.