Vintage 14K curvy polished cuff

Vintage curvy polished open cuff. Great play of movement and thicknesses. Interior measures 2.5 x 2.1 inch for a medium size wrist. Weighs 9.6 grams. Hallmarked “Royston K14”. Width varies but 4.1 mm on top and ranges 1.7 - 7.7 mm