ok, there's been a resounding silence to my links

so questions then -
1) Can I presume that so far as known, only Rheinische Glashutten AG Koln Erhenfeld were the maker of this Thewalt roemer ?
2) The Thewalt roemer is a 19th c reproduction of a much earlier roemer?
3) If that is the supposed case, would my roemer either be, a) an original much earlier one like the one I linked to on the Wordpress site - unlikely I know but I'm just trying to cross off possibles

or b) a Rheinische Glashutten AG Koln Ehrenfeld Thewalt roemer dated 1886
3) If not, is it likely that mine could be a much more recent i,e. late 20th. early 21st century reproduction of the 17th c. piece?
4) or are we down to no way of knowing unless I show it physically to someone now?
I have found with great difficulty, a) a number of 'reproduction' roemers, but unfortunately I was not sure whether they were 19th c classed as 'reproduction 17thc' roemers, or more recently produced. None of which were like mine so nothing further on what I already have.
And b) an American site selling newly reproduced reproduction roemers, again none the same as mine so nothing further on that.
m