Hi JCM,
Like the ring & earrings you recently asked about, these are also from Poland or another country on the Baltic coast and made within the last few years.
Bernard Cuzner (1877-1956) was a very accomplished jeweler and silversmith working in the Arts & Crafts style, his most notable work is from c.1900 to 1915. You can see a beautiful example of his work at the Victoria & Albert Museum, London website.
http://images.vam.ac.uk/indexplus/page/Home.htmltype in cuzner - in the artist/designer box, then click search.
It is worth the time.
Regards, Tom