A decorative plate I found at an antique store that looks to be quite old. It has an old yellow look with some brown spots around the corners. There is no birthplace of the piece all it has is “CHELSEA” in blueish or maybe faded black on the bottom. I also was able to trace this back to a English brand from the 1700s to early 1800s and I’m wondering if it is truly that old?

7inches/18.5cm all around and sitting at 1.5cm in height, I’m sorry I wasn’t quite sure how to measure this.