I wonder if anyone can tell me what firm used this "W" mark with something like a wheel and spokes around it. I've tried Ivo's little book and the glass marks photos on this site to no avail. The gondola itself is just over 12" long (31.5 cm). The base has a concave egg shape, almost 2 cm deep, that I've never come across before. I have a few others with flat bases that I think are Scandinavian, could this be too?