Good morning, I have just started collecting some costume jewelry; basically just whatever I think is pretty. I just picked up a small pin with two snowmen on it (I think it is enamel but as I say ...new to this) and the mark on the back is AS with a small circle after it. I can't find a reference to this mark anywhere. I'm sure someone has seen this before . Does anyone know? Thanks and I can't wait to get started reading all the forums.