I HAVE HUNDREDS OF TIE TACKS, TIE BARS AND CUFF LINKS. tie tack/bar: 1.72" x 0.81" (approx. 1-3/4" x 13/16" or 43.5mm x 20mm). collar bar: none. 0.25" = 1/4" or 6mm - pretty small for standard button holes.
The Enamel Girl Character Eating Fruit Vintage Tie Bar Clip would be a great fit for a retro or vintage decor enthusiast seeking a unique and adorable accessory to accessorize their outfits.