Nineteenth century costume jewelry including dress clips was often made using base metals such as brass, copper, nickel silver, steel and even iron. The brass and copper pieces were usually electroplated with gold or silver.
You can find the name ROYAL on many objects, from items of Cutlery to items of china and dinnerware.
ROYAL COURT was the trademark that Rice-Weiner & Co. used on their simulated pearls. Jay Kel Inc. used the name ROYAL on Jewelry.