Hi, I'm trying to identify this mark which looks like a knight's helmet with either a B, S, or similar letter inside. This is the best picture I can get. Thanks http://sv1.letmehost.com/sv1/7/thumbs/Knight_Helmet_Mark_000.jpg http://sv1.letmehost.com/sv1/7/thumbs/Sterling_Bowl_Repousse_000.JPG