Hi ,
I would think the auction house description is about a good as you may get for these , I would not call them mass produced ,as far as blown glass can be mass produced, but would have been churned out in large numbers , I would say made quickly to a price and the same for the engraving , the quality of both is not that great,the form was pretty much used all over the place in one guise or another , the Saxon glass you refer to though is of much higher quality with facet cutting to the bowl base and stem with a high conical folded foot and the engraving is superb,yours could also be Saxon but could easily be from elsewhere
cheers ,
Peter.