I found a really nice wedding band. I would like to know if there is a way to find out The makers of this ring. Also, what is the F4 engraving mean? Here is a link to pictures. https://skydrive.live.com/redir?resid=43919C935E2D9F41!10364&authkey=!AI7NBCu4QkOIwHk Also, should I get this ring...