VTG amber rhinestone & shiny black cufflinks

These goldtone vintage cufflinks have tops that measure just under 1" across. They're circular and hold amber / citrine colored prong set rhinestones, with a shiny black domed stone right in the center. The backs say "PAT. PEND.". All stones are intact! There is some scratching to the metal, & one of them has some verdigris on the back and around the shiny black stone. Noticeable when you're looking up close. Classic with a bit of flair!