Gorgeous Hand Painted Plates - need help identifying

My mom recently passed away and I found these in her attic. They are very heavy and I can tell they are hand painted. The work that went into these is absolutely amazing. I have searched high and low and cannot find any other plates that look like this.

They are 10" plates and are 2" high.

I appreciate any information you might have about them. Are they Porcelain? What time period? Even who might have made them? etc.

Thank you for your time!