Thanks! Good to know it probably has some age to it. It was in my grandparents China cabinet, so I wish I had a story behind it.I think it is old...likely from a dresser set or something like that and probably Victorian. Would have had a ground stopper. They are pretty but there doesn't seem to be much market for them.
Great observation! The handwriting back then is pretty distinguishable.I agree that it looks like it's got some age to it. I don't know much about decorative glass from that era but that "16" etched into it looks very 19th century.