This fantastically organic brass ring is a perfect example of the style of jewelry coming from Finland in the 1960's. It is marked Seppo Tamminen and Made in Finland.
Seppo Tamminen, formerly a window dresser, began making his own jewelry with no training, fueled only by his enthusiasm. Preferring to work with alternative materials, his hand-wrought pieces echo ancient Finnish and Russian themes. He made several trips deep into the Soviet Union to study Russian jewelry in museums. His necklaces and belt buckles were cut from sheet brass, and his bracelets were cast bronze, silver plated. All have a primitive feel to them (of the "bumps and craters" school). They were individually handmade at first, but eventually were serially produced and stamped "Seppo Tamminen."
Please convo me with any questions, and thanks for looking!