Based on the images and the marking, this cake plate was originally made by the famous porcelain company "Meissen." It was a factory reject, the scratched knife markings across the swords are called "cancellation marks." For one reason or another, it was decided that this particular example was a second, and it was likely sold out of the factory as an undecorated vase.
Many of these cancelled pieces ended up purchased by smaller studios located in Dresden, Germany, not that far from Meissen, where they were then decorated and resold. Meissen, used a range of cancellation marks that indicated whether a piece was to be sold unglazed, or rejected. Most do not have any secondary studio markings other than a signature of the Ddecorator who hand painted these pieces, but these decorator's names are often unknown. This one is based on Meissen's "Blue Onion" pattern and is likely from the late 19th century. In the current market a comparable cake plate would have replacement value in the $300.00- $400.00 range.