One way to date antique horseshoe buttons is by the number of horseshoe nails used on the button. If seven nails are depicted instead of eight, the button is typically more than one hundred years old. During the Victorian time period the number 7 was considered to be lucky and so, farriers would often use this number of nails when shoeing a horse. This brass horseshoe button is 1/2" in diameter and prong set in sterling silver. It is suspended from a 16 1/2" necklace of crocheted cord with bronze Swarovski pearls.