Ihave a crystal bowl about 3" high x 4 1/2" in depth that has what may be a wheat deep etched pattern. The bottom has what looks like an acid etched "M" (cursive). Does anyone have any ideas on the maker of this lovely bowl? I have seached M hallmarks, lead crystal glass bowls and can't find anything like it. I've seen many bowls with a different wheat pattern and others that are deep etched. I was hoping you might know the "M" hallmark - it could even be a "W" hallmark!!!!