A set of six boxed anodised Cristillium (aluminium based) gold napkin rings...
The box is a tourist souvenir type box, from Haut de Marais, St Ouen, Jersey and it states they are are a "Winric Product". They are most likely manufactured by Conrah Metal Products, Wales, for a Channel Islands shop. Circa 1970s vintage.
They have a matte gold anodised coating which been machine-cut through in a diamond pattern and at an angle top and bottom, to reveal the reflective silver coloured metal below. The gold is smart and subtle, not too yellow. They're round cylinder shaped. They catch the light in a really striking reflective way. Striking yet simple Modernist design. 
37mm tall x internally 3.3cm, externally 3.7cm diameter. They are in great condition for the age, the box shows some age. 
Free P&P to the UK.