I have a number of Morgantown etches.  The stems I own have all been produced on the same blanks (same shape, same stem, same optic).  I don’t have any Morgantown books so cannot date these stems, but what I have read seems to lead to an early twentieth century date.  These glasses are not uncommon.  I cannot remember where I got them.  I don’t use them as I am not really fond of them (don’t know why as they are attractive).  I think I like more deeply etched patterns, or a ‘finer’ crystal.  It’s like any preference, sometimes hard to explain.  The larger is the water goblet and the smaller is a cocktail or liquor or some other small glass purpose.