I know the mark in itself (exactly that crown and 'BAVARIA' in that form) but I am amazed to see it on such a green background ... interesting!
The mark itself (the naked crown and writing) is not able to hide any other mark, therefore the green 'cover' was needed (the combination is therefore dubbed a 'cover-up' mark). That is normally seen as the common work of decoration studios ... legal reasons forced them to hide original manufacturer marks as the manufacturers themselves were in general not very pleased to see their items 'defaced' by decorators.
However the same 'cover-up' tactics were used by manufacturers themselves, for various reasons. Even renown manufacturers like Rosenthal and Hutschenreuther sometimes took already finished and ready-marked products and had them "pimped up" by their own decoration departments. There are also cases in which a renown company had items with their A-brand (e.g. 'Rosenthal') remarked to match their B-brand (e.g. 'Stonegate China') series.
If you play around with the lighting a little (either hold the plate in various angles or have a strong light source shine *through* the plate), you should probably be able to just make out an original mark underneath the green cover-up - I assume it to be a mark from Schumann in Arzberg. (Edit: wrong, confused two similar marks, see below for solution)
