These, as their name would suggest, possess a C-shaped bridge, which was composed of a curved, flexible piece of metal which woulcould be gold or silver plated or made from stainless steel.
These, as their name would suggest, possess a C-shaped bridge, which was composed of a curved, flexible piece of metal which would provide the tension needed to stay on the nose. The frames or bridge pieces could be gold or silver plated or made from stainless steel.