This suggests that H&H were both exporters and importers of this decanter. A situation which would not have occurred a few years earlier, before Irish independence, when English silver would not have been considered as “foreign”. I cannot find any record of Hukin & Heath registering a mark in Dublin, but that might just be because I do not have the right references.
I would be interested in comments and to know if anyone else has come across this situation.
PaulH

