Peter,
similar to a set i have, it looks like yours could be mid 19th Century.
Origins difficult to identify though
Andy
http://www.glassmessages.com/index.php/topic,32860.0.html
Thanks for looking Andy.
Can see that it is similar to your glasses in the thread. Thought that the id of the glass would be "a walk in the park" with so many cut and shape to the crystal glass, but that seems not to be the case

when you have been looking for a long time.
Think you time estimate sound right, maybe because it fit with my on opinion. A bit strange that such a very nice crystal stemware is so hard to find described on the Inet.