These buttons are from our vintage warehouse stock. They are gorgeous tortoise look, with an amber tone. They are beautifully finished with a narrow rim and four holes. Here are the equivalents to the most common sizes in traditional “ligne” sizing, converted to inches and millimeters, for your convenience. Please measure your button or your existing buttonhole to be sure you are choosing the right size. LIGNE: INCH / MM 20: 1/2 INCH / 12.5MM. 24: 5/8 INCH / 15MM. 30: 3 /4 INCH / 19MM. 32: 13/16 INCH / 20MM. 34: 27/32 INCH / 21MM. 36: 7 /8 INCH / 23MM. 40: 1 INCH / 25MM. 45: 1-⅛ INCH / 27MM. 60: 1-½ INCH / 38MM. Thanks for ordering from Exquisite Fabrics! We’ve been importing and supplying fabrics, buttons, and sewing niceties to custom tailors and sewing divas in the DC/VA/MD area for more than forty years!