I have a marking question for you

by Sharon Sumner
(Siler City , N.C. 27344)

I have a gold looking Band I got in a estate sale of vintage jewelry.

It as two markings on it. One is a P with a circle around it. The other is a crown in a square. Have you ever seen these marks, if so what do they mean?

thank you for your time, and I think you might be the best, but let's wait and see...... Thank you
Sharon Sumner