Found the mark as you were saying might be above the X. It is G7S and there is a piece on this forum with that mark that was identified as being made by C. Schoorl, Zaandijk, 1875-1914 http://www.925-1000.com/forum/viewtopic.php?t=3737&highlight=g7s" onclick="window.open(this.href);return false;...