Please send image of the underside and mark as well as the dimension of how wide across.
There are 3 images of the bowl attached here, all front side views. If you can please add an image of the underside and mark that will be very helpful in assessing what you have.
Without the image of the mark on the underside, I am not able to assess what you have.
I will opt-out and your question will open again to all the experts. If someone knows the answer they will post a response to you here. You do not need to re-list your question and this does not cost you extra. There is not a guarantee that you will receive a response.
I will not be able to respond back after opting-out
I do hope you find the information that you seek.