Hi, thought I'd post an update on this - I just got the Paperweights book
by Jargstorf in and there, on page 109, just as Mark mentioned, were my weights.
Well, not mine but almost identical, they are identified in the book as
being Hungarian production based on an old design, spotted in a flea
market in 1989 so presumably made sometime before.
Will post more if I find the maker.