LARGE STUDIO POTTERY CHARGER BOWL UNUSUAL HANDPAINTED BLUE FLOWER PATTERN

This is a very large studio pottery bowl with a distinctive handpainted blue flower pattern.  Unfortunately the bowl is unmarked so a bit of a longshot to identify but I am hoping perhaps someone recognises the pattern perhaps?

Please add a base photo. Even with no marks, half the info is on the other side

No problem - here is a photo of the base.

Cheers . The black spots seem to be in the glaze rather than the clay. I was expecting it to be French because of the spotting, caused by impurities in the clay, but less likely to be if the spots are in the glaze instead

The blue shade is similar to the commonly-seen decoration on Westerwald pots, and while I don't think it's a WW piece the colour of the heavily speckled glaze reminds me of another German manufacturer*, Massemuhle Wagner.
There's an old post here with a Massemuhle plate:
https://www.20thcenturyforum.com/t7226-massemohle-wagner-owl-plate?highlight=Massemohle

*Although Westerwald is an area rather than a manufacturer, I think.

Thank you I will check this out further.