I am trying to identify (correctly) a silvermark which I believe is a Birmingham maker - but does not have the Birmingham "anchor". The bottom of a cup is marked with a W.G & S. From what I can determine it is most likely either William Greenwood and Sons or William Griffith & Sons - both from Birmingham. I also need to identify the type of silver, it isn't Sterling as it has none of the traditional sterling marks (no 9.25 or 925, no lion for British sterling). The other mark looks like a G&S vertical in an oval with a small circle under that, and underneath the circle is another oval with perhaps a 1 on top, followed by a 51 and under that a 2??) Below is a link, I hope you can view, to a picture of a drawing of the mark.
http://www.powersearchingwithgoogle.com ... echallenge