Things went a bit odd during and after the world wars. Lots of things just got labelled "foreign".
I imagine certain countries of origins might have been less popular at the time too, and would want to pretend the goods came from somewhere else, so as not to prejudice sales.
I'm sure there was some legal reason for Carlton registering itself in Oz.
Vases got themselves "celery" labels to avoid tax.
I suspected plastic lids
- they are not quite as clear as glass ones.