thanks for the additional pix xlarge, though it's possible we are still not quite seeing the feature that cat was hoping for, which would be the underneath of the foot of the glass, which might show if there is a depression where the pontil scar has been ground/polished. It's often not easy to photograph clear glass such that we can see this depression, so you may have to describe, in words, what the underside of your glasses look like.
There is a difference, usually, in appearance of the underside of the foot of drinking glasses, depending on the age of the glass. Older glasses often have a depression created by removal of the pontil scar (the depression is then polished) - modern glasses which are machine made mostly do not have this feature.
The wheel engraving looks good quality - we assume that the monogram represents the AB that you refer to - are you able to tell us what the engraved picture represents - might this be a traditional Danish subject, with helmet perhaps - and is it possible that the appearance of the head and helmet might help to suggest a date for the glass?
Very unfortunate that the museum can't provide an identification for you - usually they are very helpful.
Your English is very good by the way - 100% better than my Danish
- my apologies if you find some of our replies difficult to understand, but there are some translation links that will help you - in fact there was one such link posted here within the past few days by Anne Tique - if you are o.k. without the translation then please ignore my link ……
https://www.glassmessages.com/index.php/topic,68826.0.html