Victorian 14k Mother of Pearl Cufflinks & Shirt Studs

Handsome set of mother of pearl cufflinks and shirt studs. The cufflinks are 9/16 in diameter while the studs are 5/16 in diameter. These probably date from around 1900. There is a maker's mark (see photograph) but I have not been able to identify it. Other photographs are available and can be emailed on request.