Jacob Hull was working in Denmark – mainly in the 1970’s – producing silver and silver plated jewellery. It is very distinctive in style – large pieces sometimes with a lump of amethyst or similar, sometimes in a sunburst pattern etc. He made some pieces in silver – these would have been more expensive and I have never had one. Mostly it was in silver plate. His work was marked J. Hull and Denmark. If it was silver it was marked as such. I often see pieces that are silver plate being sold as silver – because they have a mark and look good – so do check. Also some of his pieces are marked B & D. These pieces would have been commissioned by Buch & Deichmann. A good site to look at for his work – and other silversmiths – is scandinaviansilver.co.uk – the pieces have risen in price recently. I do not buy Hull’s jewellery because I find it difficult to sell in my shop – just wrong location! The piece illustrated has the B & D mark too.