Frank - Surely Hill Oustan were simply retailers of other makers glass and not manufacturers in their own right? Certainly a large number of their illustrations within the glass sections can be attributed to various well known makers.
Bernard - You also seem to be assuming that, either, only one chair made these pieces,
or, that all information was passed from one chair to another in order to ensure consistancy. Otherwise, how would the consistancy of the use of '
V' or '
A' examples that you refer to be achieved? Whilst this
might not have been the case, amongst other things, it takes no account of the famed competition between chairs which would suggest information was unlikely be shared. Superficially, it is therefore quite possible that inconsistancy can occur within one factory.
Comment from anyone who has worked in this situation would be valuable here

Since I think you've lost me :huh:

I've proved that these jugs (and tankards and tumblers) don't exist!