Determining the maker of a Georgian tumbler is enough to make a grown woman weep.
Absolutely right, Connie!
It's where you in the US are so far ahead of us in Australia, blundering our way around without proper documentation.
Edited to make sense: I'm referring to Australian glass here. The Crown Crystal Glass Co. copied glass, imported glass and included it in their catalogues, imported glass blanks for crystal and sold them as "All Australian Made", and stuck labels for their one registered design from the 1930s, "Waverly", over all sorts of things which were definitely not "Waverly". It's a flippin' mine field. What a tangled web we weave etc etc.
All the best,