Imari style shell dish

I have this shell dish in the imari style and am trying to pin down some sort of factory and date. There is no mark other than what looks like a tiny embossed 6 (9?) in the centre and what looks to be a P along the edge. From my research it could be anything from Coalport, Worcester, Royal Crown or some other un-named factory and the date could span a number of years. There are numerous examples of this style of dish but I was unable to find a reference for the pattern itself which might have provided another clue. Would love some more experienced eyes to have a look. Many thanks.

 

It has a Coalport look to me, c1820-30. Try and match the body shape with a marked example (handle is quite distinctive), this is often the best way to be sure of the maker. Useful search terms include Japan pattern - shell dish

 

Thanks Ce. Once again you have put me on the right path to further research. I have seen quite a few shell bowls but none that matched up well enough. The painting here isn't as precise as Worcester to my mind and the colour palette seems a bit bland for the Royal Crown I've seen so I'll focus on the shape. I'm a novice so every little bit adds to my knowledge. I'm just slowly working through a big box of Asian porcelain bits I was left, some more modern and utilitarian, some like this bowl are quite interesting. I like them all. It's a mix and the pieces I absolutely can't decipher will find their way onto this site. In the meantime, I'm going blind looking at Gotheborg! But I do like the Imari style and when buying for myself always gravitate towards Asian pieces. Thanks again.

 

Maybe the same blank, but no ID: http://www.gjacksonantiques.com/648...rcelain-dishes-decorated-in-an-imari-pattern/
But, if it's not too late to edit, the above matches this pattern described as Coalport:https://www.rubylane.com/item/197251-20114/Antique-Coalport-Gaudy-Porcelain-Plate-Early?search=1

 

The colouring is certainly similar though mine hasn't the pinks but the overall decoration of both feels loose and somewhat loud. And both pieces have that interesting blue mark on the corner of the base. Both of your references also have similarities with each other especially in the execution of the larger orange flowers. The "pot" (that's what it looks like anyway) with something cooking inside (are those fish scales I see) as seen on my piece I find really unusual and I definitely haven't seen that particular item on anything else. The idea of a blank is also of great interest as the handle of mine is very close to your first reference. I now have more good solid information to continue my search. Thanks.