These cufflinks are actual buffalo nickel coins that were struck by the United States Mint from 1913 to 1938 intricately handcut with a jewelers saw. They are the perfect unique gift for a stylish man to wear on his french cuff shirts. You know the measurements of these cufflinks already...nickel size! Each pair has sterling silver cufflink findings soldered onto the buffalo nickel. The backings are strong, hinged findings that will not pull through your cuffs.