Danish silver ring designed and made by Arne Johansen. The rings are16.8mm wide at the top and 4.7mm at the back. The rings vere made in 1990s. I have 7 rings in this design 3 size L1/2 UK. 1 size M. 1 size M1/2. 1 size N . 1size N 1/2. The price was £85.00