opps again............quote from Glen Thistlewood........
..."As a quick rule of thumb (before searching through catalogues etc), to determine if an item was made by Inwald or Davidson, I use the "mirror shiny base" test. If the base of the piece is highly polished / ground and stunningly mirror shiny, then it's almost certainly the Inwald version. The mirror shiny base is a characteristic of much of Inwald's high quality pressed glass. By default, if it doesn't have that characteristic mirror polish, then it's most likely Davidson".
and both these jugs do have a flat very shiny base. So, maybe they are both Inwald. :huh: